The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of six circuit card assemblies under a presolicitation notice. The items, identified by NSN 7R-5998-015086828-EW and reference number 37534-47019-10, are critical for flight operations, necessitating government source approval prior to contract award due to the lack of available technical data for open competition. Interested vendors must provide comprehensive documentation demonstrating their capability to produce similar items, as offers lacking the required data will not be considered. For further inquiries, interested parties can contact Bridget M. Murphy at (215) 697-5047 or via email at BRIDGET.M.MURPHY6.CIV@US.NAVY.MIL.