The Boeing Co., St. Louis, Missouri, is awarded a $20,922,762 cost-plus-fixed-fee modification (P00010) to a previously awarded indefinite-delivery/indefinite-quantity contract (N6134019D0003). This modification increases the contract ceiling to provide post-production engineering and logistics support for the T- 45 aircraft. Work will be performed in St. Louis, Missouri (92%); Lancashire, United Kingdom (6%); and Warner Robins, Georgia (2%), and is expected to be completed in January 2025. No funds will be obligated at the time of award; funds will be obligated on individual orders as they are issued. The Naval Air Warfare Center Aircraft Division, Patuxent River, Maryland, is the contracting activity.