The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of lighting fixtures and replacement parts, identified by NSN 7R-6210-016604935-EY, with a quantity of 4 each. This procurement is critical as the items are flight critical, requiring government source approval prior to contract award, and only previously approved sources will be solicited due to the lack of sufficient data for open competition. Interested vendors must submit detailed information for source approval along with their proposals, as failure to provide the required documentation will result in disqualification. For further inquiries, interested parties can contact Katlyn M. Galetto at (215) 697-6549 or via email at katlyn.galetto@navy.mil, with proposals due within 45 days of the notice publication.