The National Institute of Standards and Technology (NIST) is performing market research to identify alternative sources for scheduled maintenance and repair of an Astrophysics Inc X-ray inspection system used for security screening at its campus. No specific budget amount is stated. The performance location is the NIST campus. NIST may pursue a competitive acquisition if capable and interested sources respond; otherwise, a sole-source award is possible. Interested parties should provide requested company, product, and pricing information to assist NIST's market research.