LEBANON, Tenn. — A medical helicopter crashed Saturday east of Nashville , Tennessee, killing one crew member and critically injuring two other crew members, authorities said. No patients were on board. The Vanderbilt LifeFlight helicopter went down around 1:45 p.m. in a field east of Nashville, between Lebanon and Gallatin, about 22 miles (35 kilometers) east of Nashville, the Wilson County Sheriff’s Office said. The helicopter crashed about 12 miles (19 kilometers) south of the Music City