Orbital ATK Congratulates Winner of 2017 Marine Corps Aviation Association Award
Sgt. Jordan Mercado Named Aviation Ground Marine of the Year

Dulles, Virginia 22 May 2017 -- Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, congratulates Sgt. Jordan K. Mercado of the Marine Wing Support Squadron 373 for receiving the Marine Corps Aviation Association’s (MCAA) Jack W. Demmond award at the MCAA Annual Symposium. The award, sponsored by Orbital ATK, recognizes the Aviation Ground Marine of the Year and was established in honor of Lt. Col. Jack W. Demmond, who served Marine Corps aviation with versatility and distinction for more than 29 years. The award recognizes the most outstanding contribution by a ground Marine serving with Marine aviation. The recipients are Marines of all ranks who are nominated by their superiors and vetted through Headquarters Marine Corps.

“Congratulations to Sgt. Mercado for being singled out from a field of highly successful and accomplished Marines,” said Cary Ralston, Vice President and General Manager of the Defense Electronic Systems Division of Orbital ATK’s Defense Systems Group. “Orbital ATK is honored to partner again with the MCAA to sponsor the Jack W. Demmond Award and recognize Sgt. Mercado’s significant contributions to keeping our nation safe.”

For more information about the Marine Corps. Aviation Association awards visit http://www.flymcaa.org/awards.

Orbital ATK’s Defense Systems Group is an industry leader in providing innovative and affordable precision and strike weapons, advanced propulsion and hypersonics, missile components across air-, sea- and land-based systems, ammunition and related energetic products.

About Orbital ATK

Orbital ATK is a global leader in aerospace and defense technologies. The company designs, builds and delivers space, defense and aviation systems for customers around the world, both as a prime contractor and merchant supplier. Its main products include launch vehicles and related propulsion systems; missile products, subsystems and defense electronics; precision weapons, armament systems and ammunition; satellites and associated space components and services; and advanced aerospace structures. Headquartered in Dulles, Virginia, Orbital ATK employs approximately 12,500 people in 18 states across the U.S. and in several international locations. For more information, visit www.orbitalatk.com.

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Media Contact
Bryan Kidder
(410) 864-4932
bryan.kidder@orbitalatk.com
Investor Contact
Barron Beneski
(703) 406-5528
barron.beneski@orbitalatk.com
Media Contact
 Kidder
(410) 864-4932
bryan.kidder@orbitalatk.com
Investor Contact
Barron Beneski
(703) 406-5528
barron.beneski@orbitalatk.com