NASA's Armstrong Flight Research Center requires subject matter expertise and technical services for legacy aircraft engine support. The agency intends to award a sole-source contract to Atec, Inc., citing their unique knowledge and expertise, under the authority permitting only one responsible source. The requirement is not for a commercial product or service under FAR Part 12. Interested parties may submit their capabilities and qualifications to the named contact for consideration in deciding whether to compete the acquisition. Performance will be at NASA Armstrong Flight Research Center.