Flynn was a fire engine. He had the ability to run both on the road and on rails. Whenever a fire occurs, he was dispatched.
Flynn and the rest of the fire brigade quickly put out the burning coal truck that came out of the tunnel from the Skarloey Railway. When he was called again to put out the coal fire at the Skarloey Railway, he attempted to use the tunnel, but found out from Sir Topham Hatt that it was blocked by a wrecked truck. Therefore, Flynn was required to take the long way around. Despite extinguishing the fire, most of the Skarloey Railway's coal supply was decimated.