Re: But isn't the environment itself just as important?
Partly useless, because you can't fake PANIC. You can't fake a fire, and so on. Even the late Terry Pratchett noted it. IOW, unless people REALLY feel their life is on the line, they won't behave the same way during a drill than they will during an actual emergency. Practice isn't all you need, you ALSO need discipline: the ability to not panic when surprises DO come. Say detonate a flashbang once in a while nearby to condition people to react in desired ways.