Greetings from Andrews AFB

Yesterday's White House memo to the Washington press corps came with a triple-warning to "Remember your passports" -- and so far this morning everyone seems to have managed it. The regulars that tail Obama don't normally carry theirs, let alone fill out Canadian customs forms, as they are doing right now at Andrews Air Force Base outside Washington. About 50 of us here for the pre-dawn checkin and now ready to board the press plane to Ottawa. CNN tops out with a team of seven, five from CBS, four from Fox. The Toronto Star's seat is Row 10, across from Politico. Some are dazed and sleepless after Obama's two-day swing through Denver and Phoenix. But there is a buzz nevertheless that this trip's different.