12th SWS keeping watch
THULE AIR BASE, Greenland – Capt. Cuyler Gembol, 12th Space Warning Squadron operations flight commander, and Tech. Sgt. Christopher Boyd, NCO in charge operations support flight, performs various tasks assigned for the shift, March 25, 2015. The 12th SWS operates the Upgraded Early Warning Radar 24/7. The radar is maintained by U.S. and Canadian Airmen, and is assisted by a U.S., Danish and Greenlandic contractor force. (U.S. Air Force photo by Senior Airman Tiffany DeNault)