Jumper appearing in ‘Stargate: SG-1' episode Published March 9, 2004 SAN ANTONIO (AFPN) -- Air Force Chief of Staff Gen. John P Jumper will appear in the season-ending episode of “Stargate: SG-1” scheduled to air March 19 on the Sci-Fi Channel.General Jumper appears in scenes taking place in the Oval Office for the episode “The Lost City, Part 2.” The episode was taped Aug. 25 in Vancouver, British Columbia. As the only person involved with the filming who had personal experience in the actual Oval Office, General Jumper was able to provide some technical advice on protocol in the office, according to an entertainment liaison official with the Air Force office of public affairs in Los Angeles.Check local listings for exact air times.