[She calls everyone well. It's part of her job to know what people are likely to do, otherwise she ends up with nasty surprises.]

And that's just the start of it. Even after you sit them down and tell them to wait for a signal or some kind of coordinated effort, there will always be that one guy who just caaaaan't wait. He'll just say "tl;dr" and run right into the middle of a group of monsters!