The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of an antenna group assembly, identified by NSN 7R-1680-016503577-RQ. This procurement requires government source approval prior to contract award due to the flight-critical nature of the item, and only previously approved sources will be considered for solicitation. Interested parties must submit detailed technical data and documentation demonstrating their capability to produce the item, as offers lacking the required information will not be evaluated. For further inquiries, potential bidders can contact Sarah E. Crompton at (215) 697-5809 or via email at SARAH.E.CROMPTON.CIV@US.NAVY.MIL.