The teacher at medic school warned the students about sour gas, which can kill you in seconds. When you hear the siren, you are supposed to run the opposite way of the wind.
Christine went up north and found it hard to stop looking at wind socks.
The guys working there told her they don't think about it unless the siren goes off and I think she got that way too. You can't stay hyper-alert 24 hours a day!