Silver Flag: International
U.S. Air Force Staff Sgt. Birgir Hrafnsson, 435th Construction and Training Squadron, briefs U.S. Air Force Col. John Shapland, 435th Air Ground Operations Wing commander, on a Reverse Osmosis Purification Unit during the Silver Flag exercise, Ramstein Air Base, Germany, March 15, 2011. Silver Flag is a weeklong training program that Airmen from all over the world participate in. Silver Flag combines classroom and practical application exercises to prepare airmen for deployment. (U.S. Air Force Photo by Airman 1st Class Brea Miller)