The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the procurement of Digital Frequency Discriminators, Airborne (NSN: 7R 5999 015492395, P/N: 232A310-1) with a quantity of three units. This sole source requirement indicates that the government does not possess sufficient data to contract with any source other than the current supplier, necessitating Government Source Approval prior to award. The items are critical for military operations, and interested vendors must submit their proposals via email to Dana Scott at dana.l.scott14.civ@us.navy.mil, adhering to the submission guidelines outlined in the NAVSUP WSS Source Approval Brochure. Proposals must be submitted by the specified deadline, and all inquiries should be directed to the same contact for further clarification.