Maj. Christopher Walker, a joint terminal attack controller evaluator with 3rd Battalion, 25th Marines participates in Fire Support Coordination Exercise (FSCEX) 1, a sub-event of Integrated Training Exercise (ITX) 4-21 at Marine Corps Air Ground Combat Center, Twentynine Palms, California on July 22. FSCEX allows Reserve Marines to coordinate various fires assets from across Marine Air Ground Task Force 25 to eliminate enemy positions in a simulated combat environment. (U.S. Marine Corps photo by Sgt. JVonnta Taylor)