Northrup Grumman Systems Corp., Melbourne, Florida, is awarded a $387,269,566 modification (P00006) to a cost-plus-incentive-fee, cost-plus-fixed-fee order (N0001923F2625) against a previously issued basic ordering agreement (N0001920G0005). This modification exercises an option to provide continued research and development of the E-2D Advanced Hawkeye Cockpit Technical Refresh cockpit redesign and Theater Combat Identification to replace the current E-2D integrated navigation and controls and display systems and tactical mission computer and display systems for the Navy. Work will be performed in Melbourne, Florida (70.1%); St. Augustine, Florida (11.7%); Cedar Rapids, Iowa (4.2%); Bloomington, Maryland (9.1%); Falls Church, Virginia (1.3%); and various locations within the continental U.S. (3.6%) and is expected to be completed in September 2028. Fiscal 2024 research, development, test and evaluation (Navy) funds in the amount of $15,940,911 will be obligated at time of award, none of which will expire at the end of the fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.