Col. Michael Webb, 375th Air Mobility Wing vice commander and Col. Edward Farley, 375th Aeromedical Evacuation squadron commander, lift a sludge hammer to a door of building 505 on Scott Air Force Base, Ill. April 2, 2012. The door belongs to the old AES building on Scott. It has stood for more than 63 years old and the sludge hammer signified beginning of demolition. (U.S. Air Force photo/ Staff Sgt. Stephenie Wade)