Vaughn Armstrong (b. July 7, 1950) is an American actor. He played a high level security officer very loyal to the Nightwatch and communicated directly with the head offices on Earth. After Nightwatch took over control of the station's security forces away from Garibaldi and the rest of the command staff he worked with Zack Allan as the new leadership of Babylon 5 Security, apparently assuming the role as Zach's second in command. He led an operation to arrest the Command Staff in what was actually a coup setup by Sheridan to capture all of the Nightwatch personnel. He was kept under House Arrest after surrendering his weapons and Identicard, then shipped back to Earth along with the rest of the Nightwatch team.
- Guest Starring, "Messages from Earth," Security Guard #1
- Guest Starring, "Point of No Return," Security Guard #1.