* Houston Associates, an Arlington telecommunications and network engineering company, won a one-year contract and options for as many as six additional years worth up to $70 million from the Defense Information Systems Agency to provide support to the agency's Advanced Information Technology Services-Joint Program Office. Houston Associates will maintain and operate integration environments; support the leading edge services network; demonstrate, evaluate, monitor and test advanced information technology; and maintain and operate infrastructure.

* Thomas & Herbert Consulting, a Silver Spring management consulting and information technology company, won a one-year contract with four one-year options worth up to $30 million to provide technical support to the Department of Homeland Security's Office of the Chief Information Officer. Subcontractors include BearingPoint of McLean and SRA International of Fairfax. The contract is to assist Homeland Security in consolidating the government's approach to terrorism screening. The initial task order will focus on documenting work processes and data flows of terrorist information with the department's border-security and other screening programs.

* SRA International, a Fairfax government contractor, won a five-year, $13.6 million contract from the National Institute of Allergy and Infectious Diseases to develop a Web-based database system to collect, store and analyze data used by biomedical researchers to facilitate study of their work for biodefense and public health. SRA will develop and operate the institute's bioinformatics resource center, which will consolidate known information about enterobacteria, pathogens that cause diseases such as dysentery, plague and food poisoning, to improve knowledge-sharing and data analysis.

* Vastera, a Dulles global trade management company, said Visteon will not renew its agreement for managed services when it expires Dec. 31. Vastera has provided services to Visteon, a Dearborn, Mich., automotive parts supplier, since 2000. Vastera said it will work through a transition period with Visteon that may extend into 2005. Vastera expects to bring in $6 million in revenue during 2004 with the Visteon contract.

Compiled from reports by Washington Post staff writers.