I was on the 24th floor of a Marriott in Chicago recently and was freaking out just thinking of 911. Good luck.
We're supposed to move to the 50th floor; I was up there last week for a meeting, and it's just wide open, totally exposed, to the south, towards Sea-Tac Airport.
My husband works in a building that is in the afternoon shadow of the Sears Tower in Chicago. I'm on the lookout for a new job for him (to say the least).