The Boeing Co., Tukwila, Washington, is awarded an $86,195,913 firm-fixed-price, indefinite-delivery/indefinite-quantity contract. This contract provides follow-on sustainment engineering support to include rapid engineering support and technical services as well as engineering data, technical publications, technical data, engineering change proposals and material, accident investigations, training and field services integral to daily fleet operations in support of the C-40A aircraft for the Navy and Marine Corps. Work will be performed in Tukwila, Washington, and is expected to be completed in November 2031. No funds are being obligated at time of award; funds will be obligated on individual delivery orders as they are issued. This contract was not competed. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity (N0001925D0006).