Aviation Systems Engineering Co. Inc.,* Lexington Park, Maryland, is awarded a $58,000,000 modification (P00009) to a previously awarded cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity contract (N0042120D0123). This modification increases the contract ceiling to provide engineering, technical, and program management support and mission systems-related capabilities, including, but not limited to, research, development, test, and evaluation of avionics and airborne anti-submarine warfare development and test tool sets, multi-level security solutions, offensive and defensive tools and capabilities, and associated supplies in support airborne, sub-surface, and ground-based capabilities for the Navy. Work will be performed in Patuxent River, Maryland (94%); Whidbey Island, Washington (2%); Jacksonville, Florida (2%); and Crane, Indiana (2%), and is expected to be completed in September 2025. No funds will be obligated at the time of award; funds will be obligated on individual orders as they are issued. Naval Air Warfare Center Aircraft Division Patuxent River, Maryland, is the contracting activity.