NASA's National Aeronautics and Space Administration (NASA) is seeking to extend a Maintenance Support Agreement for Spirent GPS/GNSS Simulator Systems, with the intention to issue a sole source contract to Spirent Federal Systems Inc. This procurement is critical for maintaining the operational integrity of NASA's GPS/GNSS simulation capabilities, which are essential for various aerospace applications. Interested organizations are invited to submit their qualifications in writing to the designated contact by 2:00 p.m. Central Standard Time on June 30, 2025, as the government will evaluate submissions to determine if a competitive procurement is warranted. For further inquiries, please contact Monica Wilson at monica.d.wilson@nasa.gov or Tiffany Neal at tiffany.neal@nasa.gov.