The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of three units of the Receiver Transmit, A (NSN 7R-5845-016590089-CB, REF NR H420805-2). This procurement requires government source approval 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. Only sources previously approved by the government will be considered, and interested parties must submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Information Brochures. For further inquiries, potential bidders can contact Svitlana Shvets at (215) 697-6278 or via email at SVITLANA.SHVETS@NAVY.MIL.