Secretary of the Air Force Michael B. Donley presents Staff Sgt. Zachary Rhyner the Air Force Cross March 10 at Pope Air Force Base, N.C. Sergeant Rhyner of the 21st Special Tactics Squadron received the medal for uncommon valor during Operation Enduring Freedom for his actions during an intense 6.5-hour battle in Shok Valley, Afghanistan, April 6, 2008. (U.S. Air Force photo)