An accident on 50 Highway West of Route MM, in Pettis County, late Friday afternoon seriously injured a Shawnee Kansas couple. According to the Highway Patrol, Christopher Smith, 43, of Sweet Springs was Eastbound when he ran off the edge of the road and began to skid. Smith ran into the rear of a vehicle driven by Trenton Fairbank, 26, of Shawnee. Debris from the crash struck a third vehicle driven by Gayland Gaut, 63, of Olathe Kansas. Smith received minor injuries but refused treatment. Trenton Fairbank and his passenger, Sara Fairbank, 26, were seriously injured and flown to Centerpoint Hospital.