President Obama's trip to Copenhagen, Denmark for the International Olympics Committee meeting just happens to take him out of the country the day the unemployment numbers for September are announced.
UPDATE: Just FYI, the flight to Copenhagen takes about eight hours, so at a cost of $56,518 per hour (according to a 2006 report) to fly Air Force One, the cost to taxpayers for this trip is roughly $904,288.
Since Michelle Obama is traveling separately, she has separate costs...