Thunderbirds Are Go Episode 5 Fireflash Episode Title:Fireflash.Episode Description:Kayo is riding aboard Fireflash, a supersonic airliner that was recently improved by Brains, unaware that the Hood is planning to hijack it in mid-flight. While International Rescue notices the plane has suddenly vanished from their monitors and attempt to locate it, Kayo manages to avoid a powerful gas attack that has knocked out both the passengers and the crew, and is forced to not only confront the Hood, but also safely land the airliner when the craft is accidentally damaged and the landing gear fails to deploy.