NASA's Glenn Research Center is seeking to modify an existing sole source contract for vibration and post-vibration verification testing of the 20W 20K Cryocooler. The primary objective is to enhance the technology readiness level of the cryocooler, which is critical for ensuring its reliability in future NASA missions. The contractor will be responsible for designing and fabricating a vibration test fixture, conducting comprehensive testing, and documenting all findings to support NASA's requirements. Interested organizations must submit their capabilities and qualifications to Linda Nabors at linda.m.nabors@nasa.gov by 5:00 EDT on October 25, 2024, as the government will evaluate submissions to determine if a competitive acquisition is warranted.