Airman 1st Class Robert Hardy, Explosive Ordnance Disposal journeyman from the 628th Civil Engineer Squadron, out of Joint Base Charleston, S.C., looks for a simulated unidentified explosive object as part of a training scenario, May 21, 2012. This scenario, which involves identifying different UXO's, is a part of Hardy's 5-level upgrade training. (U.S. Air Force photo/ Airman 1st Class Chacarra Walker)