The government requires SME support for pre-award planning, solicitation development, technical evaluation, post-award design review, installation quality oversight, testing, accreditation readiness, and sustainment transition for a SCIF at NBSFS. The effort must support physical security, cybersecurity, SCIF accreditation, SSO review, ATO/ATC support, AO review, UL 2050 certification, NIST 128-bit encryption certification, training, testing, and sustainment. This is a Request for Information (RFI) seeking Letters of Interest from potential contractors. Letters of Interest are due by 1:00 PM ET on 2 June 2026. No budget amount or performance location beyond the SCIF at NBSFS is specified.