U.S. Air Force Staff Sgt. Matthew Hill, 633rd Civil Engineer Squadron Explosive Ordnance Disposal technician, loads a Civil War-era cannonball onto a truck for testing along with six other pieces of ordnance, from the Casemate Museum at Fort Monroe in Hampton, Va., May 30, 2013. The museum asked the EOD team to ensure its munitions were free of hazardous materials. Hill said it was EOD’s mission to ensure the ordnance is safe to put on display or house. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)