I used to work right next door to your (Harris Bank building), We were working a little late one night, and fire fighters came onto our trading room floor, and asked why we hadn't evacuated yet. It turned out the fire was on the other side of our floor and somehow our alarms were affected. The firefighters got us out the door quickly, but it was fun watching some of the people who could barely make it down 19 floors.
It turns out some HR person was smoking in her office, (this was just after smoking was banned in the office) she threw her ashtray in the garbage can, and poof. She wasn't disciplined because she was a AA hire.