Pakistan air force Red Flag Exercise
A Pakistan air force crew chief chalks an F-16 upon arrival for a Red Flag exercise July 16, 2010, at Nellis Air Force Base, Nev. The team stopped at Lajes Field, Azores, July 14 through15 to refuel and bed down their crew before heading to Nellis AFB. This is the Pakistan air force's first time participating in Red Flag. (U.S. Air Force photo/Lawrence Crespo)