Staff Sgt. Devin Casteel (left), Combat Arms

Staff Sgt. Devin Casteel (left), Combat Arms Non-Commissioned Officer in Charge, from the 233d Space Group, gives an interview to Staff Sgt. Benjamin Kimball, a broadcaster from the 140th Wing, Colorado Air National Guard from Buckley Air Force Base, after a live fire exercise at Fort Carson, Colorado. The 233d Space Group is enhancing their ability to survive and operate in austere field conditions during their annual field training exercise at Fort Carson Army Installation, Colorado Springs. They are the USAF’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/RELEASED)