MARINE CORPS AIR STATION YUMA, Ariz. -- U.S. Marines with the Provost Marshal's Office (PMO), Headquarters and Headquarters Squadron (H&HS), Marine Corps Air Station (MCAS) Yuma, conduct Special Reaction Team (SRT) training on MCAS Yuma, Ariz., Feb. 25, 2019. The SRT is comprised of military police personnel trained to give an installation commander the ability to counter or contain a special threat situation surpassing normal law enforcement capabilities. (U.S. Marine Corps photo by Sgt. Allison Lotz)