This is a sole-source, firm-fixed-price contract for the new manufacture of three B-2 aircraft alternator generators. Delivery of all units is required on or before November 30, 2029. The government states that Hamilton Sundstrand Corporation is the only known source able to satisfy this requirement, as the necessary data rights are not government-owned. The notice clarifies that while the solicitation is not using commercial item procedures, interested parties may identify their capability to provide a commercial alternative within 15 days. An ombudsman is available to confidentially address concerns from potential offerors.