Cpl. Clayton Thomas, squad leader, Lima Company, 3rd Battalion, 5th Marine Regiment, and a native of Coloma, Wis., repels mock enemy attacks with an M203 grenade launcher during an integrated exercise Oct. 15, 2013. The training helped Marines see how multiple elements of an attack work together to accomplish a mission. The Marines also trained with light anti-armor weapons, M240 B medium machine guns and were supported by artillery fire.