The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure four JTIDS DDPG units under a sole source requirement. This procurement is necessary as the Government lacks sufficient data to contract with sources other than the current supplier, and the items are subject to Free Trade Agreements and require Government Source Approval prior to award. Interested vendors must submit the required documentation as outlined in the NAVSUP WSS Source Approval Brochure, which is available online, and offers that do not include this information will not be considered. For inquiries, potential bidders can contact Marisa L. Tetkowski at (215) 697-2644 or via email at marisa.tetkowski@navy.mil.