The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of four units of a power supply cover, identified by NSN 7R-6130-014565841-EY. This solicitation is classified as a presolicitation notice, and it is critical to note that government source approval is required prior to contract award due to the flight-critical nature of the item and the inadequacy of available technical data for full and open competition. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and failure to submit the required information will result in disqualification from the award process. For further inquiries, potential bidders can contact Svitlana Shvets at (215) 697-6278 or via email at svitlana.shvets@navy.mil.