Andrews International, one of the largest private full-service national security firms, said Thursday that it has acquired Seventrees Corp., a specialized security and training services company based in Benton Harbor, Mich. The price was not disclosed.

Seventrees provides uniformed security, personal protection, special event services. The acquisition includes Crossroads Training Academy, a Seventrees subsidiary that specializes in security driving skills, protective vehicle operations, and attack recognition and avoidance training, the Los Angeles-based Andrews said

Seventrees’ senior partner Fred Foster will become vice president of the Midwest Region, said Ty Richmond, Andrews co-president, in a statement. Andrews employs more than 4,000 security personnel. A similar employee count was not available for Seventrees.

Andrews is owned by executive and management team members with investment backing from DFW Capital Partners, Pasadena-based Meridian Venture Partners, Theo Capital Partners and affiliates of New York Life. With revenues exceeding $190 million, Andrews was recently ranked as the fifth largest U.S.-based private security and risk mitigation services provider by the trade publication Security Letter.