Having a blast
BALAD AIR BASE, Iraq -- Senior Airman Patrick Heltne, 332nd Expeditionary Civil Engineer Squadron explosive ordnance disposal technician, places a blasting cap into C-4, an explosive substance, here, March 13. The blasting cap, which is attached to shock tubing, is used to initiate unexploded ordnance detonations from a safe distance. Airman Heltne is deployed from Ellsworth, S.D. (U.S. Air Force photo/ Senior Airman Julianne Showalter)