A-T- Solutions Inc. has acquired GreenLine Systems.

Arlington, Va.-based GreenLine specializes in risk management associated with maritime and cross-border movement of vessels, goods and people. The company works mainly with governments. Terms of the deal were not disclosed.

A-T- Solutions, headquartered in Vienna, Va., focuses on counterterrorism and offerings intelligence, technology, training and operations services. The company expects the acquisition to extend its counterterrorism services into international markets and into transportation security and border protection.

Paul Weiss Rifkind Wharton & Garrison LLP and Pillsbury LLC provided legal advice to A-T Solutions on the deal. Arc Securities LLC and Paradigm Counsel advised GreenLine on the deal. 

The transaction comes on the heels of another deal that centered on counterterrorism technology. In October, Chicago private equity firm GTCR sold Six3 Systems Inc. to CACI International Inc. (NYSE: CACI), a provider of intelligence technology to government customers, for $820 million.

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