U.S. Air Force Staff Sgt. Eric Skogen, 140th Operations Group, removes a set of wheel blocks from an F-16 Fighting Falcon before a flight during an Operational Readiness at Buckley Air Force Base Colo., Jan. 20, 2012. Buckley Air National Guard airmen are taking part in the ORE being held on base throughout the weekend. The exercise evaluates airmen with mission readiness in preparation for real world deployments as well as an inspection later this spring. (U.S. Air Force photo by Wolfram M. Stumpf /RELEASED)