That's the entire point: they are NOT communicating with the people in that Dome; nobody is telling them ANYTHING.
You are a collosal BORE as a poster because you cannot keep up YOUR end of a discussion because you are either obtuse or deliberately acting that way.
Then why, oh why, are you so involved in posting to me? Gotta say, though, you're not all that exciting yourself. Just another armchair expert on whatever the "hot issue of the day" happens to be.
Ok now for those jumping on Howlin about the PA system stuff I think you should also realize that most PA systems are set up where u can disconnect speakers and amplifiers. It would take less electricity to speak over the PA system then it does to run 1 of the lights if they break it down to just one speaker facing the area where the ppl are sitting at.
Now flame me if ya want for it...