Definition: (DOD, NATO) The network of ground radar sites and command and control centers within a specific theater of operations which are used for the tactical control of air defense operations.
Tips that will help finance your education, excel in the classroom, and advance your career. More >
Looking for a new job? Use these tips and put your best foot forward. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.