Northrop Grumman Systems Corp., Annapolis, Maryland, is awarded a $17,246,905 firm-fixed-priced, cost-plus-fixed-fee, indefinite-delivery/indefinite-quantity requirements contract for depot level repair. This follow-on contract includes: maintenance, modifications, repairs, alteration, upgrades of systems and spares for the AN/AQS-24 Sonar Detecting Set (all variants), Common Post Mission Analysis and Intermediate Level Test Equipment to support the Navy for the currently deployed airborne mine countermeasures legacy systems. This contract includes options which, if exercised, would bring the cumulative value of this contract to $77,590,973. Work will be performed in Annapolis, Maryland, and is expected to be completed by October 2026. No funding will be obligated at the time of award. The contract was not competitively procured in accordance with Defense Federal Acquisition Regulation 6.302-1(a)(2)(ii) and (iii) – circumstances permitting other than full and open competition when only one responsible source and no supplies or services will satisfy agency requirements. Naval Surface Warfare Center – Panama City Division, Panama City, Florida, is the contracting activity (N61331-22-D-0001).