Having been a participant in the attempted evacuation of a 15 story building during multiple fire drills, I'm not looking forward to ever having to evacuate for

Having been a participant in the attempted evacuation of a 15 story building during multiple fire drills, I'm not looking forward to ever having to evacuate for real. After 2 hours under ideal conditions, the stairwells were still clogged with people, and nobody above around the 10th floor got out.