Bethesda-based Lockheed Martin Corp. won a five-year, $88.5 million contract extension for operation and maintenance of systems, equipment and facilities at the Navy's Tactical Training Ranges in Fallon, Nev., and Yuma, Ariz., the Navy said yesterday.
Lockheed's Systems Support & Training Services will handle operation and maintenance of electronic warfare ranges, electronic combat threats, jammers, communications and optical equipment, and will assist in the development of tactics for Navy and Marine aircrew training using the Integrated Air Defense System.


