Engineers from the 105th Engineer Battalion work in teams to prepare bangalore torpedos for detonation during training at Fort Bragg, N.C., Feb. 7, 2015. At least once yearly the soldiers have the opportunity to practice and maintain their engineering skills by assembling and detonating several types of explosive charges. (U.S. Army National Guard photo by Spc. Lisa Vines, 382nd Public Affairs Detachment/Released)