Frazier Park, CA - Surveillance video has been released showing the moments of the deadly crash involving a stolen ambulance and a semi-truck in Frazier Park.The driver of the semi-truck and a woman who stole the ambulance were killed instantly. The crash happened Wednesday after the woman, who reportedly was armed with a knife, took the ambulance from a crew who had responded to her call for help.Witnesses in the area said the ambulance was traveling as fast as 100 miles per hour. The woman crashed the ambulance into the semi-truck in front of Flying J Travel Plaza off Frazier Mountain Park Road.Investigators believe the woman may have intentionally drove the ambulance into the semi-truck. The names of the driver and woman have not been released.