This Request for Information (RFI) seeks market research for follow-on rocket propulsion testing support services, requiring specialized knowledge across all scales of testing from small components to launch booster-class engines. The contractor must engineer, integrate, modify, and operate propellant systems for toxic, cryogenic, and explosive assets, as well as handle and transport these materials. Performance of services will be at Edwards Air Force Base (EAFB), with incidental real property alterations requiring Contracting Officer and EAFB Civil Engineering approval. No specific budget amounts or submission timelines are provided in this description. The official program name may change before a formal solicitation is issued.