ATK (NYSE: ATK) announced today that it will relocate its corporate headquarters as of October 1, 2011 to Arlington, Virginia, where the company will expand its existing office space. The company will continue to maintain a strong presence in Minnesota, including approximately 210 Minnesota-based corporate employees. In total, ATK employs approximately 2700 people in Minnesota.  ATK currently employs approximately 3500 people in the Mid-Atlantic region, where it operates facilities in Maryland, Virginia and West Virginia.

Virginia Governor Bob McDonnell welcomed ATK to northern Virginia, and said, “We are pleased that ATK is joining the vibrant aerospace and defense community that contributes so much to the commercial base of our state, and look forward to the company’s continued growth and progress here.”

“The relocation of ATK’s headquarters to the Washington D.C. area will provide our company with opportunities for increased engagement with our customers and Congress, as well as with our aerospace and defense industry peers that already are located in the region. Expanding our presence and visibility in the Washington area will support our strategy of creating a more global, diversified company,” said Mark W. DeYoung, President and CEO.

ATK is a Fortune 500 aerospace, defense, and commercial products company with operations in 22 states, Puerto Rico, and internationally, and revenues of approximately $4.8 billion.  News and information can be found on the Internet at www.atk.com