Army Spc. Ivan Celley rolls an ammunition belt for a land–based Phalanx weapon system at Camp Manion, Iraq, Jan 7, 2017. Celley is assigned to Bravo Battery, 5th Battalion, 5th Air Defense Artillery Regiment, The Phalanx is a rapid-fire, computer-controlled, radar-guided gun system designed to defeat anti-ship missiles and other close-in air and surface threats. Army photo by Spc. Christopher Brecht