HAINES CITY, Fla. - Three recent N.C. high school graduates were killed and a fourth critically injured Saturday when their car drove into the path of a tractor-trailer, authorities said. Authorities identified the victims as Terron Chu Davis, 18, of Winston-Salem; Ryan Byerly, 18, of Clemmons; and Sean Maxwell, 18. Maxwell's hometown was not immediately known. Bryan Staley of Lexington was in critical condition Saturday at Lakeland Regional Medical Center. The teens were vacationing in Orlando to celebrate their graduation from North Davidson Senior High School in Lexington Davis, who was driving a 1996 Buick, made a left turn at...