Lance Cpl. Alex Rowan, a combat engineer with 4th Combat Engineer Battalion, 4th Marine Division, stationed out of Bessemer, Ala., runs to take cover before the Anti-Personnel Obstacle Breaching System detonates during the SAPPER Leaders Course aboard Camp Lejeune, N.C., June 26, 2015.
During the course, the Marines used assault and breaching techniques to clear a wire obstacle using line charges that utilized C4 explosives and their APOBS. (U.S. Marine Corps photo by Cpl. Krista James/Released). Original public domain image from Flickr