U.S. Army Soldiers from the 25th Brigade Support Battalion, 1st Stryker Brigade Combat Team, 25th Infantry Division, secure their base area using concertina wire Decisive Action Rotation 15-03 at the National Training Center, Fort Irwin, Calif., Jan. 21, 2015. The training is reflective of the complexities of potential adversaries our nation could face during wartime. (U.S. Army photo by Spc. Ashley Marble/Released)