ELLSWORTH AIR FORCE BASE, S.D.--(Left) Airman 1st Class Ryan Anger and Staff Sgt. Jacob Martin, 28th Operations Support Squadron air traffic controllers, manage air traffic, Oct. 14. The DASR technology is the newest available technology and it uses less power, requires less maintenance and manpower, and costs significantly less to operate than other systems currently in use. (U.S. Air Force photo/Airman 1st Class Corey Hook)