The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of a flight-critical item identified as a lanyard, with the National Stock Number (NSN) 1R-9999-LLIKZA160-SX. The procurement requires Government source approval prior to contract award, as the technical data available does not support acquisition through full and open competition, necessitating that only previously approved sources be solicited. Interested vendors must submit comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice, with the possibility of expedited consideration for those with existing Basic Ordering Agreements. For further inquiries, interested parties can contact Jake Kucowski at (215) 679-2012 or via email at JAKE.KUCOWSKI.CIV@US.NAVY.MIL.