Ac Active First Family Is On The Move In Maine By Felicia Sonmez July 18, 2010 BAR HARBOR, MAINE -- President Obama and his family aren't just getting outside the Beltway on their brief vacation here -- they're getting outside, period. Since their arrival Friday afternoon, the Obamas have been biking, hiking and boating their way around Mount Desert Island, the third-largest island on the Eastern Seaboard and home to the 47,000-acre Acadia National Park. The first stop Friday was a 90-minute bike ride on the lushly wooded trails around Witch Hole Pond at the northern end of the island....