Northrop Grumman Systems Corp., Linthicum Heights, Maryland, is awarded a not-to-exceed $28,700,000 modification to previously awarded firm-fixed-price contract M67854-19-C-0043 for Ground/Air Task-Oriented Radar (G/ATOR) systems. This modification provides for the procurement of one additional G/ATOR system for the Air Force. The G/ATOR program is managed within the portfolio of Program Executive Officer Land Systems, Quantico, Virginia. Work will be performed in Linthicum, Maryland (37%); East Syracuse, New York (28%); Stafford Springs, Connecticut (7%); Tulsa, Oklahoma (6%); Syracuse, New York (4%); Valencia, California (3%); San Diego, California (3%); Richardson, Texas (3%); Farmingdale, New York (2%); St. Paul, Minnesota (2%); Gilbert, Arizona (1%); Phoenix, Arizona (1%); Lowell, Massachusetts (1%); Littleton, Colorado (1%); and Durham, North Carolina (1%). Work is expected to be complete in January 2025. Fiscal 2021 procurement (Air Force) funds in the amount of $14,350,000 are being obligated at the time of award, none of which will expire at the end of the current fiscal year. This modification was not competitively procured in accordance with Defense Federal Acquisition Regulation 6.302-1 and 10 U.S. Code § 2304(c)(1). Marine Corps Systems Command, Quantico, Virginia, is the contracting activity.