This is a 5-year, indefinite quantity contract for the production of a Blackhawk UH-60 helicopter air duct assembly, with a total delivery schedule of 365 days after order. The procurement is set aside 100% for small businesses. The estimated quantity is 10 units over the five-year base period with no option periods. Proposals must be submitted in writing to a specified fax number, and offerors must complete a copy of the solicitation available online. The government will evaluate proposals based on a combination of price, past performance, and other factors.