U.S. Marines with Combat Logistics Battalion 1, Combat Logistics Regiment 1, 1st Marine Logistics Group conduct a combat logistics patrol during a Marine readiness exercise (MRX) at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., March 24, 2014. The MRX was the culminating exercise of Integrated Training Exercise 3-14, which prepared Marines in support of Operation Enduring Freedom.