The Department of Defense, specifically the Department of the Navy, is seeking proposals for the procurement of 35 units of the Indicator, Course, in Repair/Modification of, under a presolicitation notice. This procurement involves a specific National Stock Number (NSN 7H-6605-014603965-GL) and is intended for supplies or services that will be negotiated with only one source due to the government's determination that it is uneconomical to acquire the necessary data or rights for alternative sourcing. The goods are crucial for navigational instruments, and interested parties are encouraged to submit their interest and capability statements within 45 days of the notice, with the primary contact for inquiries being Aaron McFee at (717) 605-2706 or via email at AARON.D.MCFEE.CIV@US.NAVY.MIL.