In 2000, NG acquired Federal Data Corporation, Navia Aviation As, Comptek Research, Inc., and Sterling Software, Inc. In 2001, the company acquired Litton Industries, a shipbuilder and defense electronics systems provider for the U.S. Navy.
Pada tahun 2000, NG mengakuisisi Federal Data Corporation, Navia Aviation As, Comptek Research, Inc., dan Sterling Software, Inc. Pada tahun 2001, Northrop mengakuisisi Litton Industries, sebuah produsen kapal dan penyedia sistem pertahanan elektronik untuk U.S. Navy.