A platoon of infantrymen of 3rd Battalion, 15th Infantry Regiment, 4th Infantry Brigade Combat Team, 3rd Infantry Division, maintain security and wait for the first obstacle to be breached while combat engineers from 4-3 Brigade Special Troops Battalion, 4th IBCT, set a Bangalore torpedo in a combined arms live-fire exercise on Fort Stewart, Ga., Jan. 28, 2015. (U.S. Army Photo by Sgt. Joshua Laidacker, 4th IBCT, 3rd ID, Public Affairs)