Orbital ATK is no more.

Falls Church-based Northrop Grumman (NYSE: NOC) on Wednesday, as expected, completed its $7.8 billion acquisition of Dulles-based Orbital and immediately changed its name to Northrop Grumman Innovation Systems, a fourth business sector for the defense contracting giant.

The Orbital website now redirects to Northrop’s.

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Orbital ATK is no more