Tech. Sgt. James Fleming discovers a key piece of evidence during the investigation of a created crime scene Dec. 1, 2010, at Eglin Air Force Base, Fla. The investigations were part of the FBI's Large Vehicle Post-Blast School attended by state and local law enforcement agencies as well as Marine and Air Force explosive ordnance disposal technicians. Sergeant Flemings is a 1st Special Operations Civil Engineer Squadron EOD technician. (U.S. Air Force photo/ 2nd Lt. Andrew Caulk)