Gen. Robert B. Neller, Commandant of the Marine Corps, walks across Lance Cpl. Torrey L. Gray Field after disembarking from a UH-1Y Venom aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 17, 2017. Neller was at the Combat Center to observe Integrated Training Exercise 1-18. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris) - Gen. Robert B. Neller, Commandant of the Marine Corps, walks across Lance Cpl. Torrey L. Gray Field after disembarking from a UH-1Y Venom aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 17, 2017. Neller was at the Combat Center to observe Integrated Training Exercise 1-18. (U.S. Marine Corps photo by Lance Cpl. Preston L. Morris)