U.S. Marine Corps Cpl.l Robert Cleckley, motor transport mechanic, Marine Wing Support Squadron 471, demonstrates how to attach a towbar to a Humvee during Integrated Training Exercise 4-14 aboard the Marine Corps Air Ground Combat Center Twentynine Palms, Calif., June 16, 2014. Marines from MWSS 471 are training to be part of a Marine Air Ground Task Force.