This is a Sources Sought notice for market research to identify potential manufacturers for specific Patriot missile system spare parts, including a printed wiring assembly and two cable assemblies. The performance period for any future contract would be one year. The notice specifies that this is currently a sole-source procurement under FAR 6.302-1, as the government lacks the data rights and it is uneconomical to reverse engineer these parts, requiring offerors to be the actual manufacturer or an approved source. Firms capable of producing these items are encouraged to identify themselves and seek source approval from the designated engineering authority to compete for any future solicitation. The government is interested in responses from all business types, including small businesses.