This opportunity is for the supply of 9 Heat Exchanger, Air spares (with a range of 3-15) for the B-2 aircraft, including a first article and test report. Performance of services will be at Tinker AFB, Oklahoma, with delivery required by May 1, 2027. The government does not own the technical data, so interested firms must contact the original equipment manufacturer (Hamilton Sundstrand or AeroCore X) to acquire data or rights. No budget amount is specified, and the acquisition is not set aside for small businesses. All responsible sources may submit a proposal, but the government intends to solicit from a limited number of approved sources.