NEWS

The Air Force will upgrade its ultimate bunker buster

The largest non-nuclear weapon in the Air Force's arsenal recently got an upgrade from Boeing, Air Force officials told Military.com.


While they couldn't comment on how many GBU-57 weapons received the upgrade for operational security reasons, "the Enhanced Threat Response IV modification improved the weapon's performance against hard and deeply buried targets," Air Force spokeswoman Ann Stefanek said. The announcement was first reported by Bloomberg News.

Known as the Massive Ordnance Penetrator, or MOP, the bomb is a bunker buster meant to take out hard, deeper-rooted areas, such as underground lairs. While the MOP weighs in at 33,000 pounds, its warhead is only roughly 5,300 pounds.

The MOP is a GPS-guided munition designed for bombers like the B-2 Spirit and, thus far, has never been used in combat.

A B-2 Spirit soars after a refueling mission over the Pacific Ocean on Tuesday, May 30, 2006. The B-2, from the 509th Bomb Wing at Whiteman Air Force Base, Mo., is part of a continuous bomber presence in the Asia-Pacific region. (U.S. Air Force photo/Staff Sgt. Bennie J. Davis III)

Whether or not the MOP is currently deployed was not disclosed.

In October 2017 The Aviationist website posted an account of Northrop Grumman-made B-2s simulating airstrikes across various targets in Missouri. According to the witness, the strikes, simulated in the Ozarks, resembled a practice run in a mountainous terrain such as Afghanistan or North Korea.

Meanwhile, citing a test and evaluations report, Aviation Week recently reported that three B-2s, each armed with a GBU-57, struck at targets at the Army's White Sands Missile Range in New Mexico in May, 2017.

The MOP outweighs the Air Force's Massive Ordnance Air Blast, or MOAB, bomb. However, the air-burst MOAB — first deployed in combat in 2017 — is the most powerful conventional bomb with 18,000 pounds of explosives, equivalent to about 11 tons of TNT.

Also Read: Watch classic jets test out napalm and other bombs

The 21,600-pound GBU-43 — nicknamed "mother of all bombs" — dropped from an MC-130 special operations cargo plane onto a specific location in Nangarhar province in eastern Afghanistan in April 2017. The intention was to take out militants affiliated with the Islamic State of Iraq and Syria's branch Khorasan, or ISIS-K, amassed in a tunnel complex.

That strike killed at least 94 militants, a U.S. military official said at the time.

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