ATV driver critical after collision 

BY DAN HILDEBRAN  Monitor Editor  KEYSTONE HEIGHTS— The Florida Highway Patrol said a Lake Region man was in critical condition after he was struck by a SUV on SR 21 north of Keystone Heights.   According to troopers, the 29-year-old was crossing the state highway near Gas Line Road around 7:30 p.m. when the four-wheeler was…