An accident in Johnson County involved three Warrensburg teens Wednesday night. According to the Highway Patrol 16-year-old Mason McKeehan failed to yield at County Road 251 and County Road 625 to the vehicle driven by 18-year-old Shelby Bruce, striking Bruce on the driver side. Bruce was air lifted to Centerpoint Hospital with moderate injuries. McKeehan’s passenger 18-year-old Dessiray Karm was taken to Western Missouri Medical Center for minor injuries.