This is a Request for Information/Sources Sought notice for a Cyberlock System expansion and related services to support the NIST campus. The anticipated contract is a single-award IDIQ with a base period starting at award, four one-year options, and a potential 6-month extension. The notice is for market research to determine acquisition strategy and small business capability; it is not a solicitation. Interested providers must review the draft Performance Work Statement and submit a detailed response by the specified deadline.