How to Increase Emotion in People

I find this fascinating, you know, especially the emotion component here. We had one of our companies in Australia actually. As part of a learning simulation, they hired paratroopers who were held down the wall and created a high intensity situation. It's relatively simple to make people feel quite strong threat response. Other ways that we increase emotion in people outside of landing paratroopers on a group? We know that this little tricky.