Raytheon Company, Integrated Defense Systems, Sudbury, Massachusetts, is being awarded a $15,783,949 cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract for engineering and technical services in support of the Relocatable Over the Horizon Radar (ROTHR) system for the Forces Surveillance Support Center, Chesapeake, Virginia. The ROTHR system is a unique legacy radar system that uses high frequency over-the-horizon radar to provide tactically significant wide-area air and sea surveillance tracking information. The ROTHR System supports the tracking and detection of drug trafficking activities in Northern South American and Caribbean and Gulf of Mexico basins. This contract contains two, one-year option provisions, which if exercised, will bring the contract value to $48,472,799. The Naval Supply Systems Command Fleet Logistics Support Center Norfolk Contracting Department, Philadelphia Office, is the contracting activity.