FALLS CHURCH, Va. — Northrop Grumman Corp. announced Wednesday that is has closed the acquisition of Orbital ATK Inc., a global leader in aerospace and defense technologies that has a large presence in Utah.

Orbital ATK is now Northrop Grumman Innovation Systems under the deal announced last September that was valued at $9.2 billion.

Orbital ATK has a significant Utah presence, including manufacturing and testing facilities in Clearfield, Magna and Promontory. The company employs almost 3,000 in the state with a payroll approaching $250 million doing work that includes development and testing of propulsion systems for rockets and missiles, and manufacturing advanced composite components for both commercial and military aircraft.

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