US airmen assigned to the 354th Fighter Wing tested a new arctic survival kit for the F-35A Lightning II in downtown Fairbanks, Alaska, Nov. 5, 2019.
A team of airmen from the 356th Fighter Squadron, F-35 Program Integration Office, 354th Operation Support Squadron Aircrew Flight Equipment and 66th Training Squadron, Detachment 1, used a subzero chamber to replicate the extreme temperatures of interior Alaska.
The test was performed because the current arctic survival kit won't fit in the allotted space under the seat of an F-35A. The 354th FW is expecting to receive its first F-35A in April of 2019.
"We are testing the kit that Tech. Sgt. John Williams, Tech. Sgt. Benjamin Ferguson and myself have developed over the last year in preparation for the integration of the F-35," said Tech. Sgt. Garret Wright, 66th TS, Det. 1 Arctic Survival School noncommissioned officer in charge of operations.
US Air Force Staff Sgt. Zachary Rumke tests an F-35A Lightning II survival gear kit in Fairbanks, Alaska, Nov. 5, 2019.
Four members of the team, to include Lt. Col. James Christensen, commander of the reactivated 356th Fighter Squadron, stepped into two separate chambers, one at minus-20 and the other at minus-40, wearing standard cold-weather gear issued to pilots. Once inside the chambers, the test observers timed how long it took them to don the specialized winter gear from their survival kit.
After the gear was on, the Icemen lived up to their name and stayed in the chamber for six hours. Wright recorded their condition every 30 minutes to ensure the safety and accuracy of the test.
Approximately five hours into the test, Wright noticed the temperature on the digital thermometer didn't seem accurate in one of the chambers. He found a mercury-based thermometer and discovered the temperature one of the chambers was at minus-65 and the other was minus-51.
"After realizing that the ambient room temperature was at minus-65 at the five-hour mark, I knew that we had accomplished far more than we originally set out to," Wright said. "Wing leaders wanted a product that would keep pilots alive at minus-40 and although unplanned, the findings were clear that the sleep system could far surpass this goal."
Wright holds a thermometer beside Rumke during an F-35A Lightning II survival kit test in Fairbanks, Alaska, Nov. 5, 2019.
(US Air Force photo by Senior Airman Beaux Hebert)
After six cold hours, the Icemen stepped out of the subzero chamber and spoke with the survival, evasion, reconnaissance, and escape specialists and the AFE team to address discrepancies and better ways to utilize the equipment.
"The gear was great. There were a couple of minor tweaks that I think we could make to it to improve it but overall it was solid," said Staff Sgt. Zachary Rumke, 66th TS, Det. 1, Artic Survival School instructor.
After the debrief, the four Icemen agreed the equipment is more than capable of withstanding the harsh temperatures of the Alaskan landscape and said they would feel safe knowing they had this gear to help them survive in one of the world's most extreme environments.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.
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