The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair of six units of Data Transfer Units, identified by NSN 7R 5999 016517373, in support of Foreign Military Sales to Australia for the F-18 aircraft. The procurement is a combined pre-solicitation synopsis and solicitation, with Mercury being the only approved source for these repairs, as they are the Original Equipment Manufacturer (OEM) and possess the necessary repair capabilities and technical data. Interested parties, including those who are not the OEM, are encouraged to submit capability statements or proposals, but must comply with specific requirements for source approval prior to contract award. Proposals must be submitted to Patrick Kilkenny at Patrick.j.kilkenny2.civ@us.navy.mil within 45 days of the notice publication, and further inquiries can be directed to him at 215-697-2558.