061129-D-9114G-834
Carey Wofford checks the movement of the vertical stabilizers of an F-35 Lightning II joint strike fighter test model at Arnold Engineering Development Center, Arnold Air Force Base, Tenn., during a model change prior to resuming an aerodynamics test. Mr. Wofford is an Aerospace Testing Alliance outside machinist. (U.S. Air Force photo/Rick Goodfriend)
3 of 35
