Raytheon Co., of Marlborough, Mass., is being awarded an indefinite delivery indefinite quantity contract for a maximum of $679 million for the Digital Airport Surveillance Radar System, which is a joint Department of Defense and Federal Aviation Administration activity to replace existing radar facilities at military and civilian airfields located worldwide. First fielded nearly 30 years ago, the current analog radar systems are nearly at the end of their life cycle, leading to occasional and sporadic loss of airport surveillance radar coverage. The contract is being awarded for approximately 116 fully operational turn-key ASR-11 systems, consisting of site activation activities including: engineering and technical support services; site surveys; site preparation; dismantling of existing radars; and all activities related to the production, transportation, installation and check-out of the new radar systems. Spare parts and technical assistance is also included in the contract. At this time no funds have been obligated. 853d ELSG/PK, Hanscom AFB, Mass., is the contracting activity (FA8730-08-D-0001).