The Defense Logistics Agency seeks sources to provide repair and test/inspect services for specific Circuit Card Assemblies of the PATRIOT Identification Friend-or-Foe (IFF) system, including the Interrogator Reply Processor, Dual Channel Receiver, and Input Power Conditioner. The government does not possess the technical data package, so responders must demonstrate capability through past results, contracts, and data rights. This is a sources sought notice for market research and planning only, not a request for quote or proposal. Interested parties should submit capability documentation via email to the designated points of contact. No budget amount or performance location is specified.