United States, June 30 -- Northrop Grumman Systems Corp., Mission Systems Sector, Linthicum Heights, Maryland, was awarded a $312,338,052 firm-fixed-price modification to a previously awarded contract (N00024-20-C-5519) to exercise an option for the production of Surface Electronic Warfare Improvement Program Block Three Hemisphere and Quadrant systems. Work will be performed in Baltimore, Maryland (33%); Tampa, Florida (10%); Chelmsford, Maryland (8%); Sykesville, Maryland (7%); San Diego, California (5%); Hudson, New Hampshire (4%); Woburn, Massachusetts (4%); Rochester, New York (3%); Nashua, New Hampshire (3%); Glendale, Arizona (2%); Denver, Colorado (2%); Washington, North Carolina (2%); Longmont, Colorado (1%); Cincinnati, Ohio (1%);...