A pair of four-wheeler riders were airlifted to Erlanger following separate all-terrain vehicle accidents Saturday.One of those, Steven Ray Wimberly, 33, of Readyville, will be facing drunk driving charges when he gets out of the hospital.Wimberly crashed his Suzuki QuadRacer at the intersection of Mt. Zion Road and Viola Highway (Highway 108) late Saturday afternoon.“He was heading northbound on Mt. Zion near the intersection with Highway 108 when he crested a hill and lost control,” said Highway Patrol Sgt. Billy Prater.