The following photos were just released in response to a FOIA request filed by a PBS-affiliated documentary filmmaker. They were taken by Cheney's staff photographer on September 11th, 2001.
Cheney watching the initial TV reports of planes hitting the Twin Towers:
Note his feet are on the desk, and it's barely 9am.
More pics after the break...
Here he is a bit later in the President's Emergency Operations Center (PEOC), a secure room underneath the White House:
He's clearly sitting in the President's seat (Notice the Seal directly behind him). According to PBS Frontline, he made several phone calls from the PEOC, including one to Secretary of Defense, Donald Rumsfeld.
Cheney again in the captain's chair, conferring with his BFF lawyer David Addington:
President Bush didn't get back to the White House until after 7pm. Here's Cheney bringing him up to speed:
Please check out the rest of the super creepy photos at PBS Frontline:
http://www.pbs.org/...
Update 1:
From the comments, jwinIL14 points us to the Flickr account of the U.S. National Archives, where all 356 of the photos can be viewed.