U.S. Air Force Capt. Matthew Foisy salutes during a retreat ceremony at Joint Base Charleston-Air Base, S.C., Dec. 3, 2010. The ceremony serves a twofold purpose. It signals the end of the official duty day and also serves as a ceremony for paying respect to the flag. Captain Foisy is the acting commander of the 628th Security Forces Squadron. (U.S. Air Force photo/James M. Bowman)

Patriot Guard Riders stand at attention next to their motorcycles while members from the 628th Security Forces Squadron lower the flag during a retreat ceremony at Joint Base Charleston-Air Base, S.C., Dec. 3, 2010. The retreat ceremony is coordinated with the playing of the national anthem and the lowering of the flag so that the two are completed at the same time. The Patriot Guard Riders is a diverse group of motorcycle riders across the nation who pay respect for those who risk their lives for America's freedom and security. (U.S. Air Force photo/James M. Bowman)

From left to right, Staff Sgts. Neil White, Jennifer Pentecost and Michael Whitcomb lower the flag during a retreat ceremony at Joint Base Charleston-Air Base, S.C., Dec. 3, 2010. The ceremony is coordinated with the playing of the national anthem and the lowering of the flag so that the two are completed at the same time. Sergeants White, Pentecost and Whitcomb are members of the 628th Security Forces Squadron. (U.S. Air Force photo/James M. Bowman)

Members from the 628th Security Forces Squadron standby as the folding of the flag commences during a retreat ceremony at Joint Base Charleston, S.C., Dec. 3, 2010. The ceremony is held each day, with formations every Friday. The 628 SFS traditionally performs the ceremony in their unique fashion, donning Kevlar helmets and vests, firing rounds from pre-positioned Humvees and setting off smoke. (U.S. Air Force photo/James M. Bowman)

From left to right Staff Sgts. Neil White, Jennifer Pentecost and Michael Whitcomb fold the flag during a retreat ceremony at Joint Base Charleston-Air Base, S.C., Dec. 3, 2010. During retreat, a two-man fold is conducted after the playing of the national anthem, with the NCO of the detail under watch. After it is meticulously folded into its final form the flight commander orders the colors to be retired, signifying the end of the duty day. Sergeants White, Pentecost and Whitcomb are members of the 628th Security Forces Squadron. (U.S. Air Force photo/James M. Bowman)

Mike Howey from the Patriot Guard Riders stands at attention during a retreat ceremony at Joint Base Charleston-Air Base, S.C., Dec. 3, 2010. The Patriot Guard Riders is a diverse group of motorcycle riders across the nation who pay respect for those who risk their lives for America's freedom and security. (U.S. Air Force photo/James M. Bowman)