Corpsman and combat medics often get tasked with being quasi-detectives before, during, and after coming in contact with the enemy. Due to the Geneva Convention and a special oath we take, we’re bound to treat every patient that comes our way — regardless of what side they’re on.
After every mission or patrol, the infantry squad gathers to conduct a debriefing of the events that transpired. It’s in this moment that thoughts and ideas are discussed before squad breaks for some decompression time.
If the corpsman and combat medic took care of an enemy patient and discovered new information, everyone needs to know — the info could save lives down the line.
So, what kinds of things do we look for outside of the obvious when we treat the bad guys?
4. The importance of elbows.
Ask any seasoned sniper, “how are your elbows?” He’ll probably tell you that they’re bruised as hell. Many snipers lose superficial sensation in the bony joint after spending hours in the prone position, lining up that perfect shot.
When a Taliban fighter has sore or bruised elbows, chances are they took a few shots at allied forces in the past. The squad doc can usually check during a standard exam.
3. Scars are telling.
The Taliban are well known for seeking American treatment for minor issues, but typically to go to their own so-called “doctors” when they get shot. Medical staff commonly search for other injuries while conducting their exam. Scarring due to significant injury is immediately red flagged.
Although the bad guy will likely make up a sh*t excuse for the healed-over wound via the interpreter, moving forward, he’s a guy you probably shouldn’t trust.
Often, the Taliban shows up at the American front gates, pleading for medical attention while claiming to have been innocently shot. This claim usually earns them entry into the allied base under close guard. Next, the potential bad guy gives a statement and a time frame of when he was injured.
This information will be routed up to the intel office to be thoroughly verified. Oftentimes, the state of the wound doesn’t match up with the time frame given. As a “doc,” always recall the typical stages of healing and determine how old the really wound is, regardless of statement.
1. There’s a little hope with every patient you encounter.
Although you’re on opposing sides, there’s some good in every patient you come across. From the youngest to the oldest, your professionalism and kindness could stop a future attack down the line. Winning the “hearts and minds” isn’t complete bullsh*t, but it’s close.
The Stinger missile is America’s premier short-range air defense weapon, featuring in-flight guidance and an almost 7-pound warhead that sends shrapnel ripping through planes, helicopters, and pretty much anything else flying low. It can even be shot against ground vehicles when necessary.
Recently, the missile’s manufacturer has created a new proximity fuse for the weapon — and it just passed qualification testing with flying colors.
U.S. Navy Mass Communication Specialist Seaman Aaron Kiser, assigned to the USS Bataan (LHD 5), practices target tracking with a Stinger missile training system aboard the Bataan, May 8, 2014.
(U.S. Marine Corps Sgt. Austin Hazard)
The Stinger is a hit-to-kill weapon, meaning it always tries to physically impact the enemy target before it goes off. That turns the skin of the targeted aircraft into shrapnel that rips through the rest of the aircraft, maximizing damage to engines, fuel tanks, and even the pilots. It usually ends up near the engine, since the weapon uses heat to track targets.
But making contact with the target isn’t always necessary, as the missile itself creates some shrapnel that will tear through the target’s skin. So, if it were to explode nearby its target, it’s still likely to damage or destroy the craft.
Now, the missile is being outfitted with a better proximity fuse that achieved a 100-percent hit rate during testing at Eglin Air Force Base, Florida.
That’s great news for Stinger missile shooters. The weapon can be carried by ground troops or mounted on ground vehicles or helicopters, but firing the weapon is risky, especially against ground-support jets or helicopters.
If the Stinger crew fires the weapon and misses, whether because of a malfunction, shooter error, or the target’s defenses, they’re potentially in for a world of hurt. That’s because it always takes time to fire a second missile, especially for ground troops firing the MANPADS, which is a tube with a single missile in it.
That means a very pissed off and scared pilot is going to turn around and follow the smoke plume back it its source, and the pilot is likely going to hit the missile source with everything they have available to drop and fire.
U.S. Marine Corps Cpl. Joshua L. Field, a low altitude air defense (LAAD) gunner, with 2nd LAAD Battalion fires an FIM- 92 Stinger missile during a live fire training exercise on Camp Lejeune, N.C., on Oct. 10, 2017.
(U.S. Marine Corps Lance Cpl. Cody J. Ohira)
But with a proximity fuse, a missile that would otherwise be a near-miss will still go off, generating as much damage and shrapnel as it can. That means the helicopter that would be pivoting to attack is now suffering from damage. Hopefully, the damage is in the cockpit, control surfaces, or engine. A proximity detonation might even still be enough to destroy the target outright.
If not, then at least the crew on the ground has some breathing room as the air crew tries to get an idea of how damaged they are. This could be enough time for troops on the ground to get under cover or concealment or even to get off another shot.
This is especially useful against drones which typically don’t require as much damage to be completely destroyed. And, considering just how much more prevalent drones are becoming, that could be key for future air defenders trying to maintain an air defense umbrella as Chinese or Russian forces test their defenses. All four Department of Defense branches carry the missile in combat.
Col. David Shank, commander of the 10th Army Air and Missile Defense Command, speaks with Avenger team leader, Army Sgt. Jesse Thomas, and Avenger team member Army Spc. Dillion Whitlock with Charlie Battery, 2nd Battalion, 63rd Armored Regiment, South Carolina National Guard, during an air-defense live-fire exercise in Shabla, Bulgaria, July 18, 2017.
(U.S. Marine Corps Staff Sgt. Ben Flores)
Currently, the weapon is most widely deployed in single-shot missile tubes and carried by air defense squads on the ground. There’s even an Army air defense battery that can jump these tubes into combat with other airborne troops. There’s also the Avenger system, a modified Humvee with eight missiles mounted on it.
The world is on high alert as COVID-19, more commonly known as Coronavirus, was declared a global pandemic today by the World Health Organization. WHO and other medical experts are imploring people to wash their hands, wipe down surfaces and not to touch your face. As more and more people take precautions seriously, more and more shelves are being emptied of things like toilet paper, paper towels and one of the most necessary items for on-the-go hygiene: hand sanitizer.
Empty shelves? Make your own. And the best part? It only takes two ingredients.
No hand sanitizer? No problem. Here’s how to make your own. #coronavirus #preparednesspic.twitter.com/EtKW06PAZM
We promise it’s that easy, but here’s a video so you can see for yourself. This mother-daughter duo also has some great tips on how to make your homemade hygenic concoction smell a little less like you’re a walking disinfectant. Although in these times, that’s definitely not a bad thing.
Troops in contact with the enemy have a few awesome weapons that they like to hear firing in support. Any weapon firing on the enemy is a good weapon, but these 9 have become hallowed in military culture.
1. M2 .50 cal machine gun
Quite possible the favorite weapon of troops from World War II to today, the .50 Cal is largely unchanged after over 90 years of service. It fires half-inch rounds at up to 550 rounds per minute, taking down low-flying aircraft, hostile infantry, and light vehicles.
One of the world’s premier attack helicopters, the AH-64 Apache can fly at over 173 mph, climb at 2,000 feet per minute, and carries Hellfire missiles, 30mm grenades, and 70mm rockets. Designed for an anti-tank role, Apaches are also great at covering and supporting infantry on the ground.
3. TOW Missile
Tube-launched, optically tracked, wire-guided or wireless-guided missiles are great against armored and fortified targets at a range of nearly three miles. There are portable launchers that can be carried by infantry, and the missiles can also be mounted on helicopters and vehicles.
4. Carl Gustav
The M3 Carl Gustav Recoilless Rifle can fire a number of different rounds to destroy tanks, bunkers, or infantry formations. Originally fielded in the U.S. by Special Operations Command, the Army bought it for conventional units because it had better range and firepower than the more common AT-4.
Seriously, troops love the Warthog. This flying tank-buster operated by the Air Force was built around a 30mm gatling gun, but it can also carry and precisely deliver bombs, mines, rockets, and missiles. The A-10 is so popular that airmen secretly made a video praising it to help save it from the Air Force chopping block.
When infantry soldiers are under attack, they don’t want to wait for close air support or artillery strikes. Mortars give infantry units the opportunity to drop 60mm and 81mm rounds directly on the enemy without calling for help. Army efforts to reduce mortar weight are making them even more popular.
7. Mk. 19
The Mk. 19 automatic grenade launcher fires 40mm grenades at targets nearly a mile away. Against infantry, each grenade kills targets within 5 meters of its impact and wounds people within 15 meters. It can even punch through some armored personnel carriers and many light vehicles.
8. M-134 minigun
Adopted during the Vietnam War, the M-134 fires between 2,000 and 6,000 7.62mm rounds per minute through six barrels. It was designed for helicopters to use in suppressing enemy troops, and it still chews through infantry formations today.
9. M1 Abrams
The M1 Abrams is the main battle tank of the U.S. Marines and U.S. Army. It carries a 120mm smoothbore main gun and can be fitted with machine guns from 5.56mm up to .50 cal. The almost 70-ton tank can race across the battlefield at over 40 miles per hour.
There’s always been a competition between armored units and infantry. As far back as the Middle Ages, developments in technology constantly shifted who had the upper hand. For example, gleaming knights of old wore heavy armor that protected them from most weaponry — at least until the Battle of Agincourt introduced the piercing, infantry-wielded English longbow. Throughout history, technologies developed back and forth, until, finally, the gun firmly established that an ordinary grunt could beat armor with a good shot.
However, World War I drastically changed that dynamic. The tank emerged as the modern equivalent of armored knights, seemingly untouchable by infantry. The armored edge continued to grow through World War II. Even with the development of the bazooka, the best way to kill tanks was either with other tanks, or to call in artillery or air strikes. Times were tough for infantry.
The development of the FGM-77 Dragon and the BGM-71 Tube-launched Optically-tracked Wire-guided (TOW) missile helped American grunts, but these still had problems. First, the wire guidance meant that anti-tank teams had to stay in one location to guide the missile. Any sudden moves would put the missile off course. As you might imagine, remaining stationary in the face of a tank isn’t a great idea.
Second, the missiles had a huge back-blast, which would immediately alert enemy armor to the idea that they’re being attacked. This, coupled with the wire guidance, meant enemy tanks knew when and where to look for anti-armor specialists. TOW teams were lucky: The missile’s range of 2.3 miles allowed the crews some standoff distance. Folks with the Dragon, sporting a range of just under a mile, often found themselves within heavy machine-gun range upon firing.
Thankfully, these issues have been addressed with the introduction of the FGM-148 Javelin. With a maximum range of about 1.5 miles, it gives the crews the ability to stand off. More importantly, it’s a fire-and-forget missile with a much-reduced backblast. So, even if the launch position is detected, the team can move to a new location, leaving enemy fire to rain upon an empty foxhole. The missile can attack the top of an armored vehicle (useful against tanks like the Russian Armata) or carry out a frontal attack.
That is why the Javelin is so deadly: It gives the light infantry a fighting chance against tanks. When you consider that “light” units, like the 82nd Airborne, are usually followed by heavier units with lots of tanks, the Javelin’s importance becomes very apparent.
Once America entered World War I some of the first forces it sent to France were those of the newly-formed Air Service. Among those troops was a relatively famous racecar driver and mechanic who would become America’s ‘Ace of Aces’ during the war: Eddie Rickenbacker.
When Rickenbacker enlisted in the Army, he had dreams of flying but was shipped to France as a driver for the General Staff due to his experience as a racecar driver. His advanced age (27 at the time) and lack of a college degree also disqualified him for flight training – but he was undeterred.
Assigned as the driver for Col. William ‘Billy’ Mitchell, Rickenbacker took the opportunity to bother him until the Colonel finally allowed him to attend pilot training. Rickenbacker still had to claim he was only 25 though.
Eddie completed pilot training in just 17 days and received his commission. However, Rickenbacker’s superior mechanical abilities from his days as a racecar driver sidetracked his flying career and got him assigned as the engineering officer at the Air Service Pursuit Training facility.
After finding a replacement, Rickenbacker was finally assigned to a combat flying unit – the 94th Aero Squadron – in March 1918. The squadron began flying combat missions in early April, and Rickenbacker wasted no time getting in on the action. On April 29th, Rickenbacker scored his first aerial victory and also his first Distinguished Service Cross for a vigorous fight and pursuit of a plane into enemy territory to shoot it down.
During May 1918 Lt. Rickenbacker downed five more German airplanes while earning an additional four Distinguished Service Crosses, each time attacking and dispersing larger formations of enemy planes.
Rickenbacker, through a lucky streak that seemed to last his entire life, also gained a reputation for surviving close calls and crash landings. In July 1918 in a particularly harrowing incident, “he barely made it back from one battle with a fuselage full of bullet holes, half a propeller, and a scorched streak on his helmet where an enemy bullet had nearly found its mark.”
A few days later he was grounded by an abscess in his ear but was back flying by the end of July. However, with his last kill at the end of May he would go many months without another victory.
Then on September 14, Rickenbacker started a remarkable streak, claiming his seventh kill and sixth Distinguished Service Cross. He downed another plane the next day. On September 25, he was promoted to Captain and made commander of the 94th Aero Squadron.
He promptly volunteered for a solo patrol, during which he encountered a flight of seven German planes below him. Rather than be thankful that no one saw him, he dived on the formation and attacked the shooting Germans, downed two enemy aircraft, and forced the rest to retreat. For this action, he was awarded his seventh Distinguished Service Cross.
Twelve years later, in 1930, this award was upgraded to the Medal of Honor.
At the beginning of October, Capt. Rickenbacker had 12 aerial victories. He was the leading living American pilot and was dubbed the ‘Ace of Aces’ by the press. He disliked this title because all three previous holders died in combat.
Despite his discontent with the new title, Rickenbacker led the 94th through severe fighting until the end of the war. During that time, Rickenbacker shot down ten enemy aircraft and three balloons, making him an official “balloon buster.” He also earned his eighth Distinguished Service Cross of the war – a record that hasn’t been broken.
Capt. Rickenbacker ended World War I with a total of 26 aerial victories to his credit, the American ‘Ace of Aces’ for World War I and the rank of Major. The Army promoted Rickenbacker as he left active duty but he never claimed the promotion. He felt his “rank of Captain was earned and deserved.” The public referred to him to as “Captain Eddie” for the rest of his life.
After the war, Rickenbacker went into many ventures in the automobile and aviation industries and survived many more brushes with death. He survived a near-fatal crash in early 1941 that had him out of action for almost a year. During World War II, while on a personal mission to deliver a message to Gen. MacArthur from President Roosevelt and to inspect American aviation facilities in the Pacific, the plane he was flying in lost its way and was forced to ditch in the Pacific Ocean.
Rickenbacker and the surviving crew members endured over three weeks of life rafts before rescue. Consistent with his dogged determination Rickenbacker completed his assignment before returning to the states, despite losing 60 pounds and suffering from severe sunburn.
Rickenbacker, without formal education past age twelve, would eventually rise to control his own airline, Eastern Air Lines, and make it the only self-sufficient, free-enterprise – he accepted no government subsidies – airline in America for many years. He was also the majority owner of Indianapolis Motor Speedway for many years during which time he significantly improved the track.
Captain Eddie retired in 1963. In 1972 he suffered a stroke, his last near-death experience. He recovered from the stroke but while visiting Switzerland he contracted pneumonia, and his luck finally ran out. He passed away July 23, 1973, at the age of 82 – a renowned fighter pilot and successful businessman.
Researchers from the U.S. Army Research, Development, and Engineering Command Research Laboratory, the Army’s corporate research laboratory, recently partnered with Texas A&M University to work on artificial intelligence and machine learning as applied to material informatics (and genome).
1st Lt. Levi McClenny, a doctoral candidate in the university’s Department of Electrical and Computer Engineering and an active member of the U.S. Army Reserve serving as a platoon leader and Black Hawk helicopter pilot in an aviation battalion in Conroe, Texas, recently completed a two-week internship at the lab’s Vehicle Technology Directorate at Aberdeen Proving Ground.
At Texas AM University, McClenny and his adviser Dr. Ulisses Braga-Neto support the development of an AI agent to determine the internal state of various materials and systems using microscopic images and deep machine learning techniques.
Researchers want to understand how materials fracture and break so they can potentially predict when a component will break in an aircraft, for instance, to help with maintenance and operational requirements. The idea is to engineer vehicles that can begin to detect their own deterioration.
Researchers from the RDECOM Research Laboratory, the Army’s Corporate Research Laboratory, recently partnered with Texas AM University to work on artificial intelligence and machine learning as applied to material informatics (and genome).
(US Army photo)
“We are applying machine learning techniques to better understand what is happening at the microstructure level in materials,” said Dr. Mulugeta Haile, research aerospace engineer at VTD. “We want to have a complete understanding of how materials behave during normal usage or in extreme conditions from the day they are put there until they are removed.”
McClenny said coming to the Army’s corporate research laboratory and working in its facilities allowed him to interact with some brilliant and experienced materials scientists that can not only shed some light on the work he’s done, but also pave a way forward.
“The new AI lab is absolutely incredible,” McClenny said. “I was able to use the supercomputer facilities to generate products that I will be taking back to Texas AM with me for future projects that would not be possible without the facilities Dr. Haile and Mr. Ed Zhu put together.”
According to Haile, the new AI/ML lab was conceived to facilitate research in artificial intelligence and machine learning to focus on vehicle technology and maneuver sciences. The lab, not only hosts state-of-the-art GPU accelerated high performance computing resources, it makes these resources highly available and easily configurable to users in an open and collaborative space.
Researchers from the RDECOM Research Laboratory, the Army’s Corporate Research Laboratory (ARL), recently partnered with Texas AM University to work on artificial intelligence and machine learning as applied to material informatics (and genome).
(US Army photo)
“I was able to get these products, as well as develop a plan of action for the microstructure research in the two weeks I was here,” McClenny said. “I was also able to sit down with numerous researchers from the VTD to see their data and see how we could apply machine learning approaches to learn more from it. We always say that models are only as good as the data, and here we can generate some top-notch data.”
The directorate was pleased to host McClenny and found his mix of skills to add to the overall research.
“As a PhD student and an Army Black Hawk pilot, Levi brings to the research environment a unique mix of skills and understanding,” said Dr. Jaret Riddick, director of VTD. “The unique mix of scientist and end user gives Levi a perspective that can be key to enabling the Army Futures Command’s objective of incorporating warfighter feedback into advancing science and technology for the modernization process.”
McClenny said working at the Army’s corporate research laboratory was an incredible experience and absolutely surpassed his expectations. He also said being a member of the military and a researcher offered some unique perspective.
“Throughout all the conversations and ideas, I have tried to remember the ‘why’ for these projects,” he said. “This is important to me, potentially more so than the average researcher, because I can directly impact the soldiers in my own unit, and future units, with this work. The facilities and expertise offered at this facility, not only by Dr. Mulugeta Haile, my mentor, but others in the group like Dr. Dan Cole and Dr. John Chen, really helped to expand my understanding of why we are researching the topics we are.”
Radars have long been used to track targets in the air or at sea but, traditionally, radar isn’t known for its ability to track targets on land. Despite its reputation, radar has been used for exactly that purpose as far back as Operation Desert Storm.
Electronics have advanced rapidly since then, however. In the last 25 years, we’ve gone from clunky desktop computers that ran up to 16 megabytes of RAM and a 250 megabyte hard drive to using laptops that hold 32 gigabytes of RAM and have terabytes of storage space. Today, the cell phone you hold in your hand is arguably more powerful than a top-of-the-line gaming PC of 25 years ago.
The E-8C JSTARS had to be based on the Boeing 707.
Well, that electronics revolution has helped radars, too. Previously, you needed a jumbo jet, like the 707, to carry a radar system around. Modern radars, however, are a lot smaller. One such radar is the APS-134G from Telephonics. According to an official handout, the radar weighs just under 450 pounds!
Despite being lightweight, this radar can do a lot. Among its capabilities is a ground moving target indicator, synthetic aperture radar imaging, wide-area surveillance, coastline mapping, weather mapping, and an aircraft detection and location mode that can simultaneously process over 300 targets!
The HU-25 Guardian used an earlier version of the APS-143.
The small size of this system means that you no longer need a jumbo jet to get a powerful eye in the sky. Among the planes capable of carrying this radar are Beech King Air planes, Bombardier Global business jets, and the CP-140 Aurora maritime patrol aircraft.
In short, this radar will make it very hard for bad guys to hide.
The USS Enterprise aircraft carrier (CVN 65), also known as the “Big E,” was decommissioned at Newport News Shipbuilding on Feb. 3 after 55 years of service. Now, the question is: What is the Navy supposed to do with it?
The Navy has been trying to come up with an answer since 2012, when the ship returned to its home port Naval Base Norfolk for the last time, reports DOD Buzz.
Initially, the Navy planned to have the ship towed to Puget Sound Naval Shipyard Intermediate Maintenance Facility in Bremerton, Wash., where the reactors would be removed and the rest of the ship would be recycled, but officials realized the ship is more than the workforce at the shipyard can handle.
The next move was to solicit bids from private commercial recycling operations to properly and effectively dispose of the aircraft carrier’s non-nuclear components, but officials from the Naval Sea Systems Command announced Monday it was canceling its request.
“The Navy has identified that it requires more information to determine the approach for the disposal of CVN 65, including the reactor plans, that is more technically executable, environmentally responsible and is an effective utilization of Navy resources,” explained NAVSEA spokesman William Couch, adding the Navy will be “taking no action at this time.”
Radioactivity, which is still a factor even after defueling, makes disposal difficult, but there are several options on the table right now.
The Navy could turn the USS Enterprise over to a commercial company for partial or full recycling. The former would involve the disposal of the non-nuclear components; the latter, however, would require the dismantling of the eight defueled reactor plants.
Another option is to place the carrier in “intermediate-term storage for a number of years” and put off recycling the ship. The Navy is still searching for a suitable location.
Environmental impact studies are being carried out for the various options.
“The Navy is taking these steps to ensure CVN 65 is recycled in a cost-effective and environmentally responsible manner,” Couch said. “Given the complexities of the issues involved in recycling CVN 65, the Navy remains committed to a fully open and public process for conducting the first-ever disposal of a nuclear-powered aircraft carrier.”
The USS Enterprise is a ship in a class of its own. It completed its last deployment in 2012 after sailing 81,000 miles over a 238-day deployment to the Persian Gulf.
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During World War II, 22 Asian Americans earned Medals of Honor, but, due to prejudices that lasted until decades after the fighting, only one received the award during the war: a young infantryman who fought in Italy and France before giving his life to save his comrades by eliminating machine gun nests and then throwing his body on an enemy grenade.
100th Infantry Battalion soldiers receive grenade training in 1943.
Pfc. Sadao Munemori trained in civilian life as a mechanic but, unable to find work, ended up joining the Army instead in February, 1942, just a couple of months after the Pearl Harbor attacks. Like most Asian Americans at the time — and nearly all Japanese Americans — he was sent to noncombat units to conduct menial duties.
But patriotic Japanese Americans like Munemori got a new chance in early 1943 when the Army formed the 442nd Regimental Combat Team, a segregated combat unit for Asian Americans. Munemori was assigned to the 100th Infantry Battalion and shipped to Europe in April, 1944.
Munemori first saw combat in Italy, but he was then sent to France, where he took part in the historic rescue of the Lost Battalion. The 100th Battalion had already distinguished itself multiple times when the 1st Battalion, 141st Texas Regiment, found itself cut off with limited food and water.
A painting illustrates the 100th Infantry Battalion, 442nd Combat Team, breaking through the German lines to rescue the 1st Battalion, 141st Texas Regiment.
The 100th was sent to rescue it, an order that remains controversial as it’s unclear whether the 100th was sent because of its already-impressive combat record or because the Japanese soldiers were considered expendable next to their white counterparts.
The 141st, who already knew about the 442nd’s combat prowess, was overjoyed to see the Japanese Americans attacking the German troops.
The 442nd Regimental Combat Team stands in the snow while their citations for rescuing the “Lost Battalion” are read out.
“To our great pleasure it was members of the 442nd Combat Team,” said Major Claude D. Roscoe of the 141st Regiment. “We were overjoyed to see these people for we knew them as the best fighting men in the ETO.”
In early 1945, the 442nd was sent back to Italy, where Munemori would make his last heroic sacrifice. On April 5, Munemori was part of an attack on mountain positions near Seravezza, Italy. German machine gun fire from higher altitude pinned down members of his unit and wounded his squad leader.
Pfc. Sadao Munemori was the only Japanese recipient of the Medal of Honor whose wartime recommendation for the Medal of Honor was originally approved. An additional 22 Asian Americans would be awarded the top medal in 1995 after a review of their actions.
Munemori took over as squad leader, but twice ran through enemy fire on his own to get close to machine gun nests and destroy them with grenades. While making his way back from the second nest, enemy machine gun fire and grenades rained down around him.
He was still uninjured as he approached the shell crater that he and his men were using as cover, but an enemy grenade bounced off of his helmet and into the hole. Munemori dove onto the grenade and his body absorbed the blast. The other soldiers in the crater were still injured, but survived thanks to Munemori’s sacrifice.
He was posthumously awarded the Medal of Honor in early 1946, and was the only recipient whose recommendation during the war was approved. During a review of Distinguished Service Cross and Navy Cross awards in 1995, 22 other Asian Americans medal recipients were recommended for an upgrade to the Medal of Honor for actions in world War II. Three of these upgrades were awarded to members of the 100th Battalion for their role in rescuing the “Lost Battalion” in France.
In the Hollywood blockbuster “The Core,” the planet’s core suddenly stops rotating, causing Earth’s magnetic field to collapse. Then bursts of deadly microwaves cook the Colosseum and melt the Golden Gate Bridge.
While “nearly everything in the movie is wrong,” according to Justin Revenaugh, a seismologist from the University of Minnesota, it is true that Earth’s magnetic field shields the planet from deadly and destructive solar radiation. Without it, solar winds could strip Earth of its oceans and atmosphere.
But the planet’s magnetic field isn’t static.
The Earth’s north magnetic pole (which is not the same as geographic north) has led scientists on something of a goose chase over the past century. Each year, it moves north by an average of about 30 miles.
The magnetic north pole has shifted north since the 1900s.
That movement made the World Magnetic Model — which tracks the field and informs compasses, smartphone GPS, and navigation systems on planes and ships — inaccurate. Since the next planned update of the WMM wasn’t until 2020, the US military requested an unprecedented early update to account for magnetic north’s accelerated gambol.
Now authors of a new study have gained insight into why magnetic north might be moving — and are learning how to predict these shifts.
Periodic and sometimes random changes in the distribution of that turbulent liquid metal can cause idiosyncrasies in the magnetic field. If you imagine the magnetic field as a series of rubber bands that thread through the magnetic poles and the Earth’s core, then changes in the core essentially tug on different rubber bands in various places.
Those geomagnetic tugs influence the north magnetic pole’s migration and can even cause it to veer wildly from its position.
A visualization of the interior of the Earth’s core, as represented by a computer simulation.
(Aubert et al./IPGP/CNRS Photo library)
So far, predicting these magnetic-field shifts has been a challenge. But in the new study, the geophysicists Julien Aubert and Christopher Finlay attempted to simulate the physical conditions of Earth’s core by having supercomputers crunch 4 million hours’ worth of calculations.
The researchers knew that the movement of heat from the planet’s interior outward could influence the magnetic field. In general, this happens at 6 miles per year. But they found that sometimes there are pockets of liquid iron in the core that happen to be much warmer and lighter than the surrounding fluid. If the difference between these hot, less dense bits of fluid and their colder, denser counterparts is great enough, the warm liquid can rise very quickly.
That rapid motion then triggers magnetic waves that careen toward the core’s surface, causing geomagnetic jerks.
“Think about these waves like vibrating strings of a musical instrument,” Aubert told Business Insider.
Magnetic north is important for navigational models
Keeping tabs on magnetic north is imperative for European and American militaries because their navigation systems rely on the WMM. So too do commercial airlines and smartphone GPS apps, to help pilots and users pinpoint their locations and navigate accordingly.
That’s why the British Geological Survey and the National Oceanic and Atmospheric Administration update the WMM every five years. The early update requested by the US military was completed Feb. 4, 2019.
But even with these periodic updates, geomagnetic jerks make it tough to keep the model accurate, Aubert said.
His group’s new model could address that problem by helping to predict how Earth’s magnetic field might evolve.
“Within the next few years, we envision that it should indeed be possible for our groups … to capture past jerks and predict the future ones with improved accuracy,” Aubert said.
Could the magnetic field ever collapse?
Earth’s magnetic field shields its atmosphere, which does “a bulk of the work” of keeping out solar radiation, as Revenaugh put it. If we lost our magnetic field, we’d eventually lose our atmosphere.
But according to Revenaugh, that’s extremely unlikely to happen, since the Earth’s core would never stop rotating.
Even if the field did collapse, the devastating effects depicted in “The Core” — people with pacemakers dropping dead, out-of-control lightning storms, eviscerated national landmarks — wouldn’t follow.
Without its atmosphere and magnetic field, Earth would constantly be bombarded by cosmic radiation.
A far more likely scenario, Revenaugh suggested, would involve the magnetic poles reversing as they did 780,000 years ago. When such reversals happen (there have been several in Earth’s history), the magnetic field drops to about 30% of its full strength, he said.
Though that’s a far-away scenario, Revenaugh added that it’s still important to improve scientists’ understanding of the magnetic field today.
“The better we can model it, the better we can understand what’s it’s up to,” he said.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
Janine Stange is looking for a lot of people to acknowledge what a few people have obtained over the past 156 years.
Stange, who, in 2014, became the first person to perform the national anthem in all 50 states, is in her third year of asking people to write letters of appreciation to those who have received the Congressional Medal of Honor.
“I didn’t realize how many people wanted to do this,” Stange said over the telephone from her Baltimore, Maryland, home.
Janine Stange performing the National Anthem for the 2016 National Medal of Honor Day gathering.
The Medal of Honor is the highest award for valor in action against an enemy force which can be bestowed upon an individual serving in the military.
March 25th is National Medal of Honor Day. During the last week of March, recipients meet for an annual event in Arlington, Virginia. In 2016, Stange was invited to sing the national anthem at that gathering.
In the weeks leading up to the event, she had an idea. “I thought I would ask people if they wanted to write them,” she said.
Just some of the packages and letters Janine has received to pass onto MOH recipients.
The response was encouraging.
During the first two years, Stange and event organizers reminded them of their service years. “We handed the letters out in packages, ‘mail-call style,'” she said.
There are currently 72 living Medal of Honor recipients. The honor was first issued in 1863 and has been bestowed upon 3,505 recipients since. The oldest living recipient is Robert Maxwell, 98, who served in the Army in World War II. The youngest recipient is William Kyle Carpenter, 30, who served in the Marine Corps in Afghanistan during Operation Enduring Freedom.
“If they didn’t have their medal on, you’d think you were talking to the nice guy in the neighborhood,” Stange said about her moments getting to know the ones who have been honored. “They are so in awe that people take the time to write them. Many take time to write people back.”
Stange said humility is a common trait among the recipients.
“This is an opportunity for people to learn about these selfless acts of valor. They were not thinking of their lives, but their buddies, and something bigger than themselves. They were not concerned about their own life, they were looking at future generations,” Stange said.
Medal of Honor recipient Roger Donolon with some of the mail he’s received via Ms. Stange.
Stange said she doesn’t use the word “win” for a recipient.
“They don’t ‘win’ this. It’s not a contest. I don’t say ‘winner.’ It’s because of their selfless sacrifice.”
In addition to the letters, Stange said people have included small gifts, ranging from pieces of art and carved crosses to postcards from the writers’ homes and pieces of quilts.
“Don’t limit it to letters. These small mementos make it feel very homegrown,” she said.
Stange said the letter writing is open to anyone, from individuals to group leaders (school teachers, community organization leaders, sports coaches, businesses, etc). Those interested in leading a group in this project can go online to www.janinestange.com/moh – recipient(s) will be assigned to ensure an even distribution of letters.
Sally Gorrill’s career as an engineer in the US Army has taken her to such places as Panama and the Dominican Republic, where she’s built medical clinics. Now, she’s interested in applying her skills toward a new field: forestry.
Gorrill, 30, a captain who’s spent seven years in the Army, is part of a new summer internship program for soldiers through the Veterans Conservation Corps in New Hampshire’s White Mountain National Forest. She’s getting training in land management skills as she prepares to transition out of the service.
“It’s the closest I’ve been to home in about 12 years, so it feels great to be back,” said Gorrill, of Gray, Maine, who wants to spend her future outdoors.
So far, she and two other veterans in the program have learned how to maintain trails, keep away bears, and fight forest fires. She’ll also be learning about hydrology, wildlife biology, law enforcement, and other facets of the US Forest Service, which partnered with the Department of Defense on the project.
Organizers hope the fledgling program will provide a model that can be applied nationally to assist more soldiers interested in land management.
Forest Ranger Jim Innes said the Forest Service nationwide is experiencing a lot of attrition through retirement. He said the agency has hired military veterans, who bring strong skills to the Forest Service.
“They bring a completely different way of looking at things to the agency,” he said. “There’s a huge benefit; we learn a lot from them, they learn a lot from us.”
Gorrill said some techniques used to fight wildfires are similar to ones learned in the military. “From my experience, having dealt with construction equipment, it’s probably the most direct translation, because digging trenches is something I’m used to,” she said.
One challenge for program organizers was providing lodging for the soldiers in the forest. They ended up renovating an old Civilian Conservation Corps-era structure known as “The Lodge” in the Bartlett Experimental Forest, a field laboratory for research on the ecology and management of northern hardwoods and associated ecosystems. The building hadn’t been used for about 10 years. The Forest Service received funding from businesses and volunteer help to install kitchen cabinets and handle electrical and plumbing work. Innes hopes it can be winterized so that program can run year-round.
The soldiers also will be getting help with resume writing and interview skills, as forest officials try to help place them in jobs.
Another participant, Terry Asbridge, 37, of Horseheads, New York, is getting ready to retire from the Army. He has completed 20 years, much of it in recruitment. His goal is to be a district park ranger, but he also can see himself working in firefighting, development or recreation in the forest.
“One of my passions is land management and wildlife management,” he said. “I can put this on my resume and apply for positions with the US Forest Service.”