About First Support Services, Inc. Parsons Completes Acquisition of First Support Services, Inc. Parsons is pleased to announce that it has received all necessary U.S. government... approvals and has completed its acquisition of First Support Services, Inc. (and its subsidiaries), a wholly owned subsidiary of FirstGroup. First Support Services is a leading... provider of facility operations and maintenance (O&M) services, logistics support, transportation support, and telecommunications operations services to the U.S. government. Parsons...