SILVER STAR FOR VALOR U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, awards the Silver Star to U.S. Army Capt. Gregory Ambrosia, Korengal Outpost, Afghanistan, July 11, 2008. Ambrosia was recognized for valor under fire after running into a hail of enemy gunfire to help save fallen comrades in September 2007. Mullen is on a six-day tour of the region to visit troops. He is also hosting a USO contingent including NFL stars. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 151003-Q-HHZ65-802.jpg Photo Gallery