The U.S. Air Force seeks a contractor to design, configure, test, and implement a new Closed Restricted Network to support Electronic Security System operations at Ellsworth Air Force Base, South Dakota. The project involves transitioning systems from an existing network to a dedicated Ethernet-based network while maintaining current services, and it includes integrating over 54 legacy buildings and 9 new facilities. The desired completion date for the entire project is 7 months from contract award. A site visit is expected to occur between May 11th and 22nd, with access requiring specific, valid U.S. identification. This is a presolicitation notice for planning purposes only and is not a formal request for proposals.