A volunteer displays a piece of ceramic, presumed to be from the late 18th or early 19th century, found at the Warwick Pier historical site during Earth Week events at Fort Eustis, Va., April 26, 2013. More than 230 volunteers joined environmental protection officials at Langley Air Force Base and Fort Eustis in a series of clean-up and educational projects on each installation. (U.S. Air Force photo by Staff Sgt. Wesley Farnsworth/Released)