2. If the CM did make up the story, he sure did go out of his way to sell it. After talking about other things for about 10 minutes before the show started (I was sitting in the front row aisle seat where he was assigned), I asked if he knew anything about it. He said he did, but to wait for him after the show finished. He went out of his way to find ME.
FWIW, they did have small signs near the parking booths that said something along the lines of "Heightened security today" or something like that.