U.S. Air Force Tech. Sgt. Yerida Vazquez, 36th Security Forces Squadron NCO in charge of combat arms, fires an M4 carbine at balloon targets April 29, 2017, at Naval Computer and Telecommunications Station, Guam. The balloons, varying sizes and movement in the wind, increased the difficulty of the rifle portion of the three gun shoot-off. (U.S. Air Force photo by Airman 1st Class Jacob Skovo)