Senior Airman David Schrock(left) and Tech. Sgt. Clayton Heimert review operating procedures for a four-wheel-drive service platform May 14, 2010, at Ali Base, Iraq. Airman Schrock is a heavy equipment operator deployed from Nellis AFB, Nev. Sergeant Heimert is a civil engineer deployed from Camp Perry, ANGB, Ohio. (U.S. Air Force photo/Master Sgt. Darrell Habisch)