HERNDON, Va., Dec. 10 -- Northrop Grumman Corp. has been awarded a five-year, $45 million contract by the US Air Force Materiel Command to conduct research into the physiological effects on personnel of exposure to laser radiation and how it affects visual performance. These research areas, including laser safety, vision science, laser eye protection and personnel susceptibility, are significant to the safe testing and use of major laser weapon systems, Northrup Grumman said. Work on this program will be performed at Northrop Grumman Information Technology (IT) in San Antonio, Texas. 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