Jet II,
With all due respect, if you read the rest of the post, you will see the circumstances under which they operate when inspecting undercarriages i.e. relevant engine shut down, park brake applied, FULL PPE worn. Yes, they receive extensive training in this environment. come down to our Fire Training rig at LGW and have a look. Most realistic, even down to exploding tyres, etc.
TheOddOne