Maj. Zach Roycroft, 413th Flight Test Squadron test pilot, puts on his helmet in the Air Force’s newest helicopter, the MH-139A Grey Wolf, at Eglin Air Force Base, Fla. Roycroft, piloted 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.)