Search-and-rescue operations are underway after a massive tornado hit Enid, Oklahoma. Multiple homes were destroyed or damaged, and the tornado reportedly struck Vance Air Force Base causing "extensive damage." A powerful tornado in Oklahoma on Thursday ripped roofs off buildings, knocked down power poles and sent emergency crews rushing into a rural community near Vance Air Force Base, officials said. The confirmed tornado moved across parts of Enid, a city of about 50,000 people near the state’s northern border, according to the National Weather Service. Video posted online show a rapidly rotating column of air touching down along with totaled...