I don't know where to put this.
Probably best here, with the other "QE2 Whistle" posts, as we have not yet seen how the whistle is operated.
Yes, this man was very lucky... and I am glad he was filmed while doing it. Thank you, Shaun, for spotting the recording and bringing it here!
Mind you, if it had been me pushing that marvellous button, I would have given a good long three-blast salute
!