U.S. Marine Corps Lance Cpl. Thomas A. Arko, forward observer with Bravo Company Fire Support Team (FIST), 1st Battalion, 12th Marines (1/12), looks through a pair of binoculars during a simulated fire operation aboard Puuahi Hill, near Camp Pohakuloa, Hawaii, Jan. 14th, 2014. The FISTs are enhancing their capability to communicate with fire support elements that include artillery, mortar teams, aviation support and support maneuvering ground troops during Operation Lava Viper. (U.S. Marine Corps photo by Lance Cpl. Aaron S. Patterson/Released)