This document provides details for a Request for Proposal (RFP) for Contractor Support Services for the 4.0 Small Business Innovative Research program. The RFP seeks proposals for an Indefinite Delivery, Indefinite Quantity contract to provide engineering, program management, and administrative support services to Navy Science and Technology organizations and Small Business Innovative Research program offices over a five-year period. Key requirements include aligning science and technology investments with Naval needs, identifying innovative technologies to address capability gaps, managing the science and technology portfolio, accelerating technology transitions, and supporting outreach, training, and business processes to improve effectiveness. The solicitation number is N00421-19-R-0015 and is set aside for small businesses with a North American Industry Classification System code of 541330 and size standard of $38.5 million. The Product Service Code is R408. The contracting agency is the Department of the Navy Naval Air Systems Command.