MARINE CORPS AIR GROUND COMBAT CENTER TWENTYNINE PALMS, Calif. (Sept. 13, 2020) Marines with 3rd Light Armored Reconnaissance Battalion, 1st Marine Division conduct a rehearsal of concept walkthrough for a Marine Corps Combat Readiness Evaluation (MCCRE) at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Sept. 13, 2020. A MCCRE is conducted to test a units ability and combat readiness in preparation for deployment of forces. (U.S. Marine Corps photo by Lance Cpl. William Redding)