Northrop Grumman Systems Corp., Melbourne, Florida, is awarded a $21,477,974 modification to a firm-fixed-price order (N0001921F0064) against a previously issued basic ordering agreement (N0001920G0005). This modification exercises an option to provide installation of five aerial refueling retrofit kits on the E-2D Advanced Hawkeye. Work will be performed in Ronkonkoma, New York (44.53%); Baltimore, Maryland (16.62%); Irvine, California (6.48%); Hauppauge, New York (5.85%); Columbia, Maryland (4.75%); Dorset, England (3.17%); East Aurora, New York (2.64%); North Hollywood, California (2.02%); and various locations within the continental U.S. (13.94%), and is expected to be completed in May 2023. Fiscal 2022 aircraft procurement (Navy) funds in the amount of $21,477,974 will be obligated at time of award, none of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.