The Department of Defense, through the Naval Information Warfare Systems Command (NAVWAR), is seeking proposals for the Command, Control, Communications, Computers, and Intelligence (C41) Integrated International Solutions (CIIS) Follow-On project. This procurement aims to acquire, field, and sustain tailored, interoperable C4I capabilities in support of U.S. Department of Defense security cooperation programs, specifically involving the design, procurement, and installation of C4I systems in various foreign nations. The contract will be structured as an indefinite-delivery indefinite-quantity (IDIQ) Multiple Award Contract (MAC) with a five-year ordering period, utilizing a hybrid Firm Fixed Price/Cost Plus Fixed Fee/Cost-reimbursable approach, with an estimated award date between July and August 2025. Interested parties can direct inquiries to Contract Specialist Magdalena Uriostigue at magdalena.uriostigue.civ@us.navy.mil or by phone at 858-537-8757.