Northrop Grumman was formed by the merger of Northrop and Grumman in 1994. Northrop Grumman is the fourth largest weapon manufacturer in the world (2010 data), is the world's largest manufacturer of naval ships and radars. The company includes information service system department, power system department, Aerospace Department and ship construction department. Nog shipyard under nog company is the world's largest private shipyard, which can build Nimitz class aircraft carriers.
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