Senior Airman Stephen Holifield, 332nd Expeditionary Civil Engineer Squadron explosive ordnance disposal technician, places C-4, an explosive substance, on top of unexploded ordnances to create a controlled detonation at Balad Air Base, Iraq, March 13. Unexploded ordnances that have been collected from indirect fire attacks must be blown up to prevent them from re-entering opposing forces' hands. Airman Holifield is deployed from Hurlburt Field. (U.S. Air Force photo/Senior Airman Julianne Showalter)