A pilot was a Atrion pilot serving under the Marshal.

He piloted the Marshal's command capsule to destroy Zeos. When the Marshal gave the order to fire the nuclear warheads at Zeos, the Fourth Doctor and Romana I put the command capsule in a time loop. When the time loop expired, the Pilot fired the warheads, but instead of destroying Zeos, it destroyed the Shadow and his spaceship. (TV: The Armageddon Factor)