A 316th Civil Engineer Squadron explosive ordnance disposal team member looks through a book to identify the type of unexploded ordnance, or UXO, found Jan. 20, 2010. The UXO was a shell from the Civil War era. Andrews EOD respond to any UXO for Joint Bases Andrews, Bolling AFB and Anacostia Naval Air Station, D.C. (U.S. Air Force photo by Airman 1st Class Perry Aston)