Those 10 seconds were staged. She knew that they were coming, she was in a small "room", and she probably took a look at her surrounding before those 10 seconds

Those 10 seconds were staged. She knew that they were coming, she was in a small "room", and she probably took a look at her surrounding before those 10 seconds kicked and planned what to do and in which order in her head. In real life, the warning such as this would catch people by surprise. That's not to say they wouldn't be useful, but I highly doubt they would be that useful as they were on that video. Even if I'm in my own home, I imagine it would take me at least a fifth of that time to look around and come up with a plan of what is achievable in such a short time span.