Chicago pool report #1 By Anne E. Kornblut White House Correspondent The Washington Post Shortly after takeoff, a surprise gaggle on Air Force One: with Bo, the presidential dog. His owner was just a few steps behind. President Obama watched and smiled as Bo ran down the aisle past a throng of cooing reporters. Obama cracked the old joke about needing a dog in Washington - since there's no such thing as a real friend. Someone told him that Bo had been spotted at the airport interacting with his bomb-sniffing relatives. "I didn't want him getting into it with the...