The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 80 units of a night vision adapter, identified by NSN 7R-5855-016147970-QE and reference number 720100-04-02. This procurement requires engineering source approval due to the critical nature of the item, which necessitates that only approved sources may submit proposals, as the item is flight critical and the technical data available does not support full and open competition. Interested parties must provide detailed documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with the primary contact for inquiries being Hayden Young at (215) 697-2928 or via email at HAYDEN.J.YOUNG3.CIV@US.NAVY.MIL.