We have triple redundancy on every element that goes into the debate hall.
I don't know if any of you saw the 1976 debate between Mr. Ford and Mr. Carter in Philadelphia or have seen video of it. The power failed, and there was a 27-minute silence on the stage. I needn't tell any of you how excruciating that would be, if you were in a debate of that level of magnitude, to be standing there for 27 minutes wondering what exactly had happened.
I had to laugh. Two Super Bowls ago when there was a power failure in New Orleans and a large part of the stadium went dark, I said to my husband, “I give it 45 seconds.” He said, “Forty-five seconds to what?” I said, “Until my engineer emails me and says 'not on our watch, it wouldn't have happened'”. It was about 30 seconds.