CONTROLLED BLAST U.S. airmen execute a controlled explosion at a bomb range during a routine training exercise on Ellsworth Air Force Base, S.D., March 30, 2010. The airmen, explosive ordnance disposal journeymen, are assigned to the 28th Civil Engineer Squadron. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 125630-T-EDC41-810.jpg Photo Gallery