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Northrop Grumman's Orbital Sciences Corp wins $1.1 bln U.S. defense contract -Pentagon

WASHINGTON, Sept 20 (Reuters) - Orbital Sciences Corp, a unit of Northrop Grumman Corp, has been awarded a $1.1 billion contract by the U.S. Missile Defense Agency, the Pentagon said on Friday. (Reporting by Eric Beech; Editing by Mohammad Zargham)