A B-2 Spirit bomber aircraft from the 509th Bomb Wing, Whiteman Air Force Base, MO, flies over Kansas Sept. 9, 2011. The 509th BW led the way for America’s first military response after the Sept. 11 terrorist attacks on New York and Washington, DC. The B-2s were the first US aircraft to enter Afghan airspace in October 2001. (US Air Force photo by Senior Airman Courtney Witt/Released)

[Image courtesy of the US Department of Defense Website.]