The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of the VOR Marker Beacon, with a National Stock Number (NSN) of 7R-1680-016423163-P8, requiring a quantity of 2 each. This procurement involves a commercial/non-developmental item that is flight critical, necessitating Government source approval prior to contract award, as the technical data available does not support 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 data will result in disqualification from the award process. For inquiries, potential bidders can contact Jena Visconto at (215) 697-2910 or via email at JENA.VISCONTO@NAVY.MIL.