The Department of Defense, through the NAVSUP Weapon Systems Support office, is soliciting proposals for the procurement of relay assemblies, classified under the NAICS code 335314 and PSC code 5945. This procurement is a sole source requirement, indicating that the government does not possess sufficient data to contract with any source other than the current supplier, and requires Government Source Approval prior to award. The items are critical for military applications, and interested vendors must submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, which is available online. For further inquiries, potential bidders can contact Kate Schalck at 215-697-1020 or via email at kate.n.schalck.civ@us.navy.mil.