The Department of Defense, through the Defense Information Systems Agency (DISA), is seeking industry input for innovative solutions to support the maintenance, sustainment, and enhancement of the Air Defense Communication Services’ Air Defense Infrastructure (ADI). This Request for Information (RFI) aims to gather insights on comprehensive lifecycle support, including system management, cybersecurity measures, and logistics, to ensure effective communication across 178 radar/radio sites and other platforms critical to national security. Interested companies are encouraged to submit their corporate information and prior experience related to similar projects by June 6, 2025, to the primary contact, Jessica D. Penick, at jessica.d.penick.civ@mail.mil, or the secondary contact, Thuy Le, at thuyduong.t.le.civ@mail.mil.