This Small Business Sources Sought Notice seeks information on qualified small businesses capable of providing independent surveillance and quality assurance of NIH’s contract security guard force, including inspections, penetration attempts, incident reporting, and performance evaluation under the QASP/PRS. Work will occur at NIH facilities across the greater Washington-Baltimore region, including Bethesda, Baltimore, Fort Detrick, Poolesville, and Rockville, MD, and the contractor must maintain or establish an administrative office within 100 miles of the NIH campus. The contractor must conduct random, scheduled, and unscheduled surveillance at all hours, including weekends, holidays, and inclement weather; report negative findings within 30 minutes; and provide written and periodic summary reports. The anticipated period of performance begins March 21, 2027, with a base year through March 20, 2028, followed by four option years and a 6-month extension through September 20, 2032. Interested firms should demonstrate at least five years of relevant quality assurance/surveillance experience in security and performance-based contracts and provide a capability statement and business-size status.