Airman 1st Class Kristen Warren, 741st Missile Security Forces Squadron from Malmstrom Air Force Base, Mont., wields an M-249 during a training exercise at Camp Guernsey, Wyo., Oct. 17, 2014. The machine gun was loaded with blanks to prevent harm to others taking part in the exercise. (U.S. Air Force photo by Senior Airman Jason Wiese)