Centerra Group, which specializes in government infrastructure, said Wednesday it has acquired Gregg Protection Services, a company that focuses on the security of nuclear and biological assets and other high threat targets.

“This addition to the Centerra family brings a team of uniquely qualified professionals with unmatched technical skills and experience in the highly specialized arena of global non-proliferation and threat reduction support,” Centerra President and CEO Paul Donahue said in a statement.

Centerra said that the acquisition demonstrates it is proceeding with its strategy to grow.

Gregg Protection Services was founded in 1997 in the market of providing safeguards and security, training and performance solutions, staff augmentation and vulnerability assessments. Its major customers include the U.S. Department of Energy and several National Laboratories across the country.