I work directly across the street from the 2nd tallest building in Manhattan, I see its 30th floor out my window every day. I also see the ESB from my other window. I commute every day through GCT and my wife does the same and rides the subways down to Chelsea. When we lived in DC, she worked 2 blocs from the WH.
Personally, this whole thing is completely blown out of proportion.
In Aug 2007 a steampipe blew up in the intersection right underneath my window. Did I panic? No. I walked out of the building calmly, not running, but wondering where my wife was since she was supposed to be in the subways (she wasn't).
In Aug 2003, I was in NYC for a job interview. I ended up going to the ESB and was in the 2nd bank of elevators when the power went out, I was stuck in an elevator on the 82nd floor of the tallest building in Manhattan for an hour. I spent 2 hours walking down the stairs. I was calm the whole time, wondering what happened and worried about it, but not frantic or frazzled. I looked ahead at what I needed to do and did it, one foot in front of the other.
When it comes down to it, if you're going to go, you're going to go. No sense in being a pussy about it. If I had seen the plane, I'd have probably left the building too, but I wouldn't be apoplectic about the situation afterwards, no matter who the President was.
Anybody trying to make it an issue is simply an idiot. Take Budmanton for example, he's a right-wing control freak who wants to scare the shit out of people so he can control them. Look at his sig, he's all about control. He didn't control the election so now he wants to control the follow-up (he'll fail at that too).
Annoy a right-wing fascist control freak, don't bite your nails and choose freedom.