This is a Sources Sought Notice for Information Resource Center Support Services to support the Combat Capabilities Development Command Chemical Biological Center – Rock Island. The contractor must provide all personnel, equipment, and supervision to perform inquiry management services, with a focus on multi-tiered technical help desk support and expertise in DoD logistics and CBRN domains. Respondents must confirm the ability to meet mandatory security requirements, including an active SECRET Facility Clearance and compliance with NIST SP 800-171 for safeguarding Controlled Unclassified Information. Capability statements must be submitted by 10:00 A.M. CDT on 30 June 2026. The location for performance of services is not specified.