Airmen 1st Class Micheal Leaonard, 633rd Communications Squadron core systems technician, and Alec Krabbe, 633rd CS client system technician, sandbag the doorways at the base telephone office to prevent flooding at Langley Air Force Base, Va., Aug. 25, 2011. Langley AFB is preparing for Hurricane Irene, which is expected to make landfall in the area on early Sunday morning. (U.S. Air Force photo by Staff Sgt. Logan Tuttle/Released)