Cleaning a Weapon A Marine Corps recruit cleans his weapon during the Crucible, a 13-week training program, on Marine Corps Recruit Depot, S.C., June 24, 2016. The recruits, assigned to Golf Company, 2nd Recruit Training Battalion, are required to maintain proper energy and hydration levels to safely complete the program. Marine Corps photo by Lance Cpl. Colby Cooper SHARE IMAGE: Download Image: Full Size (2.45 MB) Tags: MARINE CORPS, MARINES Photo By: Lance Cpl. Colby Cooper VIRIN: 160624-M-KK705-015C.JPG Photo Gallery