On the first Wednesday of every month, the Paris Air Raid sirens are tested at noon and again at 12:10 pm. Each time they sound for around 40 seconds.
The very day the movie Dans Le Brume was up on the screen, I heard the sirens of the Paris. I didn’t know it was scheduled for every first Wednesday, so what I recalled the very moment I heard the sirens was this movie becoming a real story. Would the gas occupy until the 4th-floor level? I don’t know about this Hollywood taste of European movie, but well it might help me to concrete an idea of what to do when an unexpected sirens ring next time in Paris.