Marine Corps Cpl. Anthony Payton swabs an M777 Howitzer after it was fired during a live-fire exercise on Camp Lejeune, N.C., Sept. 30, 2015. Payton is a field artillery cannoneer with Lima Battery, 2nd Battalion, 10th Marine Regiment, This was the last exercise the unit conducted as a standalone battery. U.S. Marine Corps photo by Cpl. Kirstin Merrimarahajara