U.S. Air Force Chief Master Sgt. Robert Hanes marshals an F-16 Fighting Falcon aircraft at Hickam Air Force Base, Hawaii, Sept. 11, 2009. The aircraft is with the California Air National Guard's 144th Fighter Wing and is participating in Sentry Aloha. Sentry Aloha is an exercise that brings dissimilar combat assets to Hickam to train with the Hawaii Air National Guard's 199th Fighter Squadron. (U.S. Air Force photo by Staff Sgt. Charles P. Vaughn) (Released)