Army Sgt. Larry Davis, right, instructs a group of Clemson University Reserve Officer Training Corps cadets how to pull apart an M2 .50-caliber machine gun as part of a leadership exercise in Clemson, S.C., Oct. 24, 2015. Davis is an Army Reserve drill sergeant assigned to the 98th Training Division's Company D, 1st Battalion, 518th Infantry Regiment, 2nd Brigade Combat Team. U.S. Army photo by Sgt. Ken Scar