Lance Cpls. Irvin Jerez (left) and Michael Rivera, with Combat Logistics Battalion 451, Combat Logistics Regiment 45 work with Marty Rapp, the work leader for the MRAP section Dec. 16, 2013 aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif. The Marines worked side-by-side with civilians who work full time in support of Exercise Support Division's mission to repair equipment used during various training exercises at the Combat Center.