Lance Cpl. Jalille Ryan Cristobal, tank mechanic, and Lance Cpl. Alan Kuang, driver, 1st Tank Battalion, grapple during a physical training competition as part of the battalion’s operational pause at Del Valle Field aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 29, 2016. (Official Marine Corps photo by Cpl. Thomas Mudd/Released) - Lance Cpl. Jalille Ryan Cristobal, tank mechanic, and Lance Cpl. Alan Kuang, driver, 1st Tank Battalion, grapple during a physical training competition as part of the battalion’s operational pause at Del Valle Field aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 29, 2016. (Official Marine Corps photo by Cpl. Thomas Mudd/Released)

Cpl. Jimmy Carter, rifleman, and Pfc. James Swain, motor technician operator, 2nd Battalion, 7th Marine Regiment earned a plaque for winning the Substance Abuse Program’s Scavenger Hunt April 15, 2016. (Official Marine Corps photo by Pfc. Dave Flores/Released) - Cpl. Jimmy Carter, rifleman, and Pfc. James Swain, motor technician operator, 2nd Battalion, 7th Marine Regiment earned a plaque for winning the Substance Abuse Program’s Scavenger Hunt April 15, 2016. (Official Marine Corps photo by Pfc. Dave Flores/Released)