NELLIS AIR FORCE BASE, Nev. -- Tech. Sgt. Kevin Ponton examines the wing surface of a B-2 Spirit Bomber here Oct. 21. Ponton is a structural maintenance technician from the 509th Aircraft Maintenance Squadron at Whiteman Air Force Base, Mo. He and several other Whiteman airmen were here for a Red Flag exercise. The exercise allows combat aircrews to train in a simulated-war environment. (U.S. Air Force photo by Master Sgt. Michael R. Nixon)