U.S. Marines drive M1A1 Abrams tanks during Integrated Training Exercise (ITX) 2-15 at Camp Wilson on Twentynine Palms, Calif., Jan. 19, 2015. ITX 2-15, executed by Special Purpose Marine Air Ground Task Force 4, is conducted to enhance the integration and warfighting capability of all elements of the Marine Air Ground Task Force. (U.S. Marine Corps photo by Lance Cpl. Kathryn Howard, 1st Marine Logistics Group Combat Camera/Released)