U.S. Army Soldiers from Bravo Company, 1st Battalion,

U.S. Army Soldiers from Bravo Company, 1st Battalion, 8th Cavalry Regiment, 2nd Brigade Combat Team, 1st Cavalry Division, provide security around a possible biological threat during Decisive Action Rotation 15-05 at the National Training Center in Fort Irwin, Calif., March 3, 2015. Decisive Action Rotations are geared toward an adaptive enemy in a complex environment. (U.S. Army photo by Sgt. Charles Probst/Released)