The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of two units of NSN 7R-1560-016952110-RQ, referenced as part number 3671230S01003-8TSP. This procurement is critical as the item is flight critical, and the necessary data for competitive acquisition is not available, necessitating Government source approval prior to contract award. Interested vendors must provide detailed documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this presolicitation notice. For further inquiries, interested parties can contact Alainna M. Pettit at (215) 697-2606 or via email at Alainna.Pettit@navy.mil.