DULLES, Va.--(BUSINESS WIRE)--Orbital ATK, Inc. (NYSE: OA), a global leader in aerospace and defense technologies, today marks its first full year of combined operations following the completion of the merger between Orbital Sciences Corporation and Alliant Techsystems, Inc. in February 2015. The merger brought into existence a new $4.5 billion space, defense and aviation systems manufacturer that employs approximately 12,000 people in 18 states across the U.S. “Our customers, shareholders and
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