NASA/MSFC intends to issue a sole source contract to Concurrent Real-Time Inc. for an annual maintenance and warranty renewal package covering 678 proprietary IT units. The required commercial-off-the-shelf subscription includes hardware return-to-factory service and RedHawk Linux software maintenance. The justification for a sole source award is that the original manufacturer is the exclusive provider of the proprietary hardware, software, and associated service agreements. Interested organizations may submit their capabilities and qualifications via email for evaluation, though a competitive acquisition is not guaranteed. The performance location and budget information are not specified in this description.