Full pressure suit helmets sit in the aircrew locker room at the 99th Expeditionary Reconnaissance Squadron April 20, 2014, at a flightline in Southwest Asia. The helmets, unique to the U-2, are the only ones in the Air Force capable of sustaining pilots during high-altitude flight. (U.S. Air Force photo/Tech. Sgt. Russ Scalf)
Tech. Sgt. Russ Scalf
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