Famario Dawson, 20th Space Surveillance Squadron radar maintenance lead, describes the final tube function from an AN/FPS-85 Transmitter Module to Chief Master Sgt. of the Space Force John Bentivegna during his visit to Eglin Air Force Base, Fla., Oct. 30, 2024. The tube uses 5.5 kV DC power to transmit pulses from the transmitter to objects in the space domain. (U.S. Air Force photo by Michelle Gigante).