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Boeing and Air Force personnel perform preflight checks on the Air Force’s newest helicopter, the MH-139A Grey Wolf, at Eglin Air Force Base, Fla. All three pictured were part of the aircraft’s first combined test flight Feb. 11. The Grey Wolf is set to replace the Air Force’s aging UH-1N “Huey” fleet. (U.S. Air Force photo/Samuel King Jr.) (U.S. Air Force photo/Samuel King Jr.)
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