Larry Byrd, the father of the late Christopher Byrd, said he is just as lost and confused as everyone else in McKinney as to why his son would want to kill someone then himself.“As far as what happened Saturday, nobody including myself knows what happened in his head or what provoked him,” Larry Byrd said. “It’s just a tragedy. Our condolences go out to the Evans family.”City spokesman Steve Hill said McKinney police investigators believe Christopher Ryan Byrd, 20, of McKinney, shot and killed Brad Evans, 26, of Van Alstyne, shortly before 6:30 a.m. Saturday at the Shell gas station in the 4900 block of Eldorado Parkway then turned the gun on himself. Byrd died after a PHI helicopter flew him to Parkland Memorial Hospital of Dallas. Story...