Nov. 9 (UPI) -- A medical helicopter crashed in Middle Tennessee over the weekend, leaving a nurse dead and its two other crew members seriously injured, according to officials. Vanderbilt LifeFlight, operator of the aircraft identified the deceased victim Sunday evening in a statement as Alan Williams , a registered nurse and flight nurse and paramedic. One of the two victims hospitalized was identified as Andrew "Andy" Sikes, critical care flight paramedic. The identity of the aircraft's