SOUTH BURLINGTON, VT—A fraction of a second after wiping out on a patch of ice, South Burlington pedestrian Isaac Berkman loudly insisted that he was fine. "I'm fine, I'm fine, I'm fine," Berkman, 24, told concerned onlookers before he even straightened his badly twisted legs and attempted to stand up. "I'm okay." After noticing a deep gash just below his left knee, Berkman instantly assured witnesses that the heavily bleeding wound was "no biggie" and "totally under control."