GREETING TROOPS U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, greets troops on Bagram Airfield, Afghanistan, July 14, 2009. Mullen is accompanying a USO tour featuring Hall of Fame National Football League coach Don Shula, All-Pro NFL running back Warrick Dunn, actors Bradley Cooper and D.B. Sweeney, and sports personality and model Leeann Tweeden on a visit to the Central Command area of responsibility. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 777339-Y-UHA53-165.jpg Photo Gallery