DULLES, Va.--(BUSINESS WIRE)--Orbital ATK, Inc. (NYSE:OA), a global leader in aerospace and defense technologies, today announced that it recently signed a contract with Lockheed Martin to produce propellant and pressurant tanks for Lockheed Martin’s updated A2100 satellite platform. The five-year contract continues a 20-year relationship between Orbital ATK and Lockheed Martin for satellite fuel tanks produced by the company’s Space Systems Group in Commerce, California. “We have been a valued