This is a sources-sought notice for planning and market research to establish a five-year Depot Level Repair and Return program for PATRIOT Missile Weapon System assemblies. The work involves inspection, testing, recertification, and repair, requiring the contractor to own and operate Special Acceptance and Inspection Equipment. Performance must occur at the contractor's own facilities, with the performance period commencing no later than July 1, 2027. The government will not provide a Technical Data Package or funding for the supplies and services described. This is not a solicitation, and the only currently known source for these services is Raytheon Company in Andover, MA.