Water pools on Tuskegee Airmen Boulevard near the AAFES Class Six/Shoppette at Langley Air Force Base, Va., following Hurricane Irene Aug. 28, 2011. Officials said the storm knocked out power to more than 4 million people and was responsible for at least 20 deaths along the East Coast. (U.S. Air Force photo by Senior Airman Jason Joel Brown/RELEASED)