As for the flyover (a real bonehead move), Obama apparently didn't know about it ahead of time, and was pretty ticked when he found out:
http://www.cnn.com/2009/US/04/27/low...ane/index.html
"First thing is, I'm annoyed -- furious is a better word -- that I wasn't told," he said, calling the aviation administration's decision to withhold details about the flight "ridiculous" and "poor judgment."
"Why the Defense Department wanted to do a photo op right around the site of the World Trade Center defies the imagination," he said. "Had we known, I would have asked them not to."