Ellsworth officials launch digital airport surveillance radar
Airmen of the 28th Communications Squadron radar maintenance view the status of the digital airport surveillance radar Oct. 14, 2009, at Ellsworth Air Force Base, S.D. The DASR technology 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)