U.S. Air Force Master Sgt. Jason Yunker, 480th Expeditionary Fighter Squadron Fuels Management Flight operations superintendent (center), discusses the Versatile Integrating Partner Equipment Refueling (VIPER) kit, with members of the Polish air force at Łask Air Base, Poland, Aug. 9, 2021. The kit utilizes host nation refueling equipment to support fifth-generation fighters, as well as any U.S. Air Force aircraft anywhere in the world. (U.S. Air Force photo by Tech. Sgt. Anthony Plyler)
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