The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a critical communication processor, identified by NSN 0R-5895-017076283-H1. This procurement requires government source approval prior to contract award due to the flight-critical nature of the item, and only previously approved sources will be solicited. Interested vendors must submit detailed technical data and experience documentation as outlined in the NAVSUP Source Approval Information Brochures, as failure to provide the necessary information will result in disqualification from the award process. Proposals must be submitted within 45 days of this presolicitation notice, and interested parties can contact Caitlin C. Donahue at (215) 697-2198 or via email at CAITLIN.V.DONAHUE.CIV@US.NAVY.MIL for further details.