Soldiers from the 4th Platoon, 1431 Engineering Company (Sapper) Battalion out of Calumet, Michigan, conduct explosive urban entry training with a silhouette charge from behind a breacher blanket at Range 21, the new light demolition range located at Camp Grayling Joint Maneuver Training Center during exercise Northern Strike on August 13, 2016. (U.S. Air National Guard photo by Capt. Cammy Alberts)