The aftermath of the plane crash that killed NASCAR legend Greg Biffle and his family is now being detailed in dramatic, newly-released 911 audio. Multiple calls were obtained by TMZ on Tuesday, January 6, painting a picture of the immediate aftermath of the crash that killed Biffle, 55, his wife, Cristina, his 14-year-old daughter, Emma, and his 5-year-old son, Ryder, on December 18. One caller on site at North Carolina's Statesville Regional Airport described "a huge fire" after a "small, mid-sized jet" crashed.