English: 010911-N-3783H-044 Pentagon, Arlington, Va. (Sept. 11, 2001) – "The Pentagon is functioning" was the message Defense Secretary Donald Rumsfeld, center, stressed during a press conference in the Pentagon briefing room barely eight hours after terrorists crashed a hijacked commercial jetliner into the national military headquarters. Rumsfeld is flanked, left to right, by Secretary of the Army Tom White, Chairman of the Joint Chiefs of Staff Army General Henry Shelton, and Senators John Warner, of Virginia, and Carl Levin, of Michigan. U.S. Navy Photo by Photographer’s Mate 2nd Class Bob Houlihan (Released)