A pre-solicitation notice announces a competitive Firm-Fixed Price, Indefinite-Delivery/Indefinite-Quantity contract for Light Interference Filters, with an estimated annual quantity of 20,000 to 25,000 units. The contract will have a five-year period and a maximum value of $8,677,861.69. The solicitation is expected on or about October 2026, with contract performance at Aberdeen Proving Ground, MD, and shipment to New Cumberland, PA. The item is export-controlled under ITAR and requires a SECRET facility clearance, access to classified data, and Joint Certification Program registration for technical data release. First Article Testing is required, though a waiver may be possible under certain conditions.