This is an RFI/market research notice for C-130 Corrosion Prevention and Control Program (CPCP) sustaining engineering and technical support services, with the government anticipating a sole-source contract. The contractor would support the C-130 Hercules Division (AFLCMC/WLN) at Robins Air Force Base, GA. Services include engineering and technical support for corrosion program strategic planning and MIL-STD-1530D ASIP requirements, annual C-130 CPC Plan updates, annual corrosion assessments of the USAF C-130 fleet and operating locations including SOF-managed C-130s, and concept studies/testing for new coatings, sealants, or related corrosion products and processes. The strategy is a five-year contract consisting of a basic period plus four option years, continuing through FY32. The notice is for market research and capability survey responses, and participation does not ensure future award or reimbursement; large and small businesses, teaming arrangements, and joint ventures are encouraged.