GRISSOM AIR RESERVE BASE, Ind. - Lance Cpl. Brett Ferry and Cpl. Luis Barrera, both Detachment 1, Communications Company, Headquarters and Service Battalion, 4th Marine Logistics Group field radio operators, work on setting up an antenna during a communication exercise here April 13. The exercise was held to help validate the Marines equipment capabilities as well as prepare them for a larger-scale this summer at Camp Lejeune, N.C. (U.S. Air Force photo/Staff Sgt. Ben Mota)