Paul Lessard of Milford was saved after being trapped under an overturned snowmobile for nearly a day.  The 64-year-old had rented the snowmobile in northern Maine, but his friend reported him missing when he did not return or answer his cell phone.  He was found by wardens near the Canadian border with the snowmobile on top of him.  He was conscious but was showing signs of hypothermia following a frigid night with snow.   MyFoxBoston.com reports Lessard was taken to Eastern Maine Medical Center in Bangor where he was listen in fair condition.