The National Aeronautics and Space Administration (NASA) Marshall Space Flight Center is seeking to procure a Spirent Federal Systems PNT-X Series GPS Simulator and associated software. This requirement is aimed at enhancing capabilities in GPS L1, L2, and L5 functionalities, as well as interference mitigation technologies, as detailed in the attached Statement of Work. The procurement is intended to be a sole source contract, justified under the authority of 10 U.S.C. 3204(a)(1), and is expected to utilize FAR Part 12 for commercial items. Interested organizations are invited to submit their qualifications and capabilities via email to Glenda Clemons by 2:00 p.m. CST on October 31, 2025, for consideration in determining whether to conduct a competitive acquisition. For further inquiries, the primary contact is Glenda Clemons at glenda.m.clemons@nasa.gov.