ABERDEEN, MD. — Opus East recently delivered a 60,000-square-foot building as part of The GATE project at Aberdeen Proving Ground, which will encompass 2 to 3 million square feet of office and technology space. The U.S. Army is helping develop the park. CACI has signed a 7-year lease for the building and will use it for research and development purposes. The property features office and conference facilities, high-bay integration areas and electronic labs. Site work and construction on the building began in May 2008.