NASA's National Aeronautics and Space Administration (NASA) is seeking a sole source contract for the RV350CCHL Rotate Stage Upgrade, which is essential for enhancing the capabilities of the Large Volume Computed Tomography (LVCT) system. The upgrade will be provided exclusively by Nikon Metrology, Inc., the original fabricator of the LVCT system, due to their unique expertise and the potential risks associated with using alternative vendors, including voiding warranties and service contracts. This procurement is critical for supporting NASA's Mars Sample Return mission, specifically for inspecting the heat shield of the Earth Entry Vehicle, and requires on-site installation at NASA's Langley Research Center in Hampton, Virginia. Interested parties may submit their capabilities and qualifications in writing by April 4, 2025, to Tessa Martinez at tessa.m.martinez@nasa.gov, as oral communications are not permitted.