OAK BLUFFS - Even as an earthquake shook major cities in the Northeast today, President Barack Obama finally looked like a man on vacation, going for a bike ride and to the beach with his family before hitting the links for a game of golf with friends. As he did last year, the president joined First Lady Michelle Obama, and daughters Sasha and Malia for a bike ride in the 5,100-acre wilderness known as the Manuel F. Correllus State Forest. Their ride over, the first family was retrieved by a phalanx of ominous-looking vehicles and whisked off to a private...