Air Force Master Sgt. Raymond Voss calls range commands during a live-fire exercise at Fort Carson, Colo., June 9, 2017. Voss is the first sergeant assigned to the 233rd Support Group. The 233rd Space Group is the Air Force’s only mobile unit providing survivable and endurable missile warning and nuclear detection to the National Command Authority. Air National Guard photo by Senior Master Sgt. John P. Rohrer