First Lt. Tyler Mach, a Lincoln, Neb., native and maintenance management officer with Headquarters and Support Company, Combat Logistics Battalion 6, 2nd Marine Logistics Group, pins on the rank of first lieutenant during a promotion ceremony at Twentynine Palms, Calif., May 27, 2013. Milan stood atop a windswept mountain and reaffirmed his oath of office on the verge of deploying in support of Operation Enduring Freedom.