Marines with the Marine Corps Tactics and Operations Group bow their heads during the invocation as part of the unit’s change of command ceremony at the Dunham Amphitheater aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 29, 2016. During the ceremony, Col. Craig Wonson, outgoing commanding officer, relinquished command to Col. Tim Barrick, oncoming commanding officer. (Official Marine Corps photo by Cpl. Thomas Mudd/Released) - Marines with the Marine Corps Tactics and Operations Group bow their heads during the invocation as part of the unit’s change of command ceremony at the Dunham Amphitheater aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 29, 2016. During the ceremony, Col. Craig Wonson, outgoing commanding officer, relinquished command to Col. Tim Barrick, oncoming commanding officer. (Official Marine Corps photo by Cpl. Thomas Mudd/Released)

Col. William Vivian, commanding officer, 7th Marine Regiment, and Col. Craig Wonson, commanding officer, Marine Corps Tactics and Operations Group, present an award and graduation certificate to Staff Sgt. Rueben Michael Breaux, intel analyst, 1st Reconnaissance Battalion, during the graduation ceremony for Tactical Marine Air Ground Task Force Integration Course 2-16 aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 23, 2016. (Official Marine Corps photo by Lance Cpl. Alysa Jesse/Released) - Col. William Vivian, commanding officer, 7th Marine Regiment, and Col. Craig Wonson, commanding officer, Marine Corps Tactics and Operations Group, present an award and graduation certificate to Staff Sgt. Rueben Michael Breaux, intel analyst, 1st Reconnaissance Battalion, during the graduation ceremony for Tactical Marine Air Ground Task Force Integration Course 2-16 aboard the Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., July 23, 2016. (Official Marine Corps photo by Lance Cpl. Alysa Jesse/Released)

Maj. Gen. Lewis A. Craparotta, Combat Center Commanding General, congratulates a graduate during the graduation ceremony for Tactical Marine Air Ground Task Force Integration Course 1-16 aboard the Combat Center May 6, 2016. (Official Marine Corps photo by Lance Cpl. Levi Schultz/Released) - Maj. Gen. Lewis A. Craparotta, Combat Center Commanding General, congratulates a graduate during the graduation ceremony for Tactical Marine Air Ground Task Force Integration Course 1-16 aboard the Combat Center May 6, 2016. (Official Marine Corps photo by Lance Cpl. Levi Schultz/Released)