Colsa Corp., Huntsville, Ala., is being awarded a $7,761,671 indefinite-delivery/ indefinite-quantity, cost-plus-fixed-fee contract to provide research, analysis, design, modification, documentation, configuration management, and engineering support services for the Data Link Test Tools (DLTT) and Gateway Systems (GS). DLTT and GS support the development, integration, and implementation of tactical data links and are used in performing interoperability testing across numerous land-based test facilities. This contract contains one four-year option, and one three-year award term, which, if exercised, will bring the total cumulative value of this contract to $68,534,164. Work will be performed in San Diego, Calif., and work is expected to be completed October 2008.