About the Air Evac Victims October 7, 2014 at 6:32 PM CDT - Updated July 21 at 2:16 PM Pilot Zechariah Smith is 36-years old and lives in Moore, Oklahoma. Flight nurse Leslie Stewart is 27-years-old and lives in Duncan, Oklahoma. She died of her injuries after the crash on October 8, 2014.Flight paramedic Johan van der Colff was born in Cape Town, South Africa, but considers Dallas his adopted hometown. He is 51-years-old and assigned to the Wichita Falls, Texas, Air Evac Lifeteam base. He frequently flies for the Duncan, Oklahoma base. He died of injuries sustained in the crash at Parkland Hospital on October 22, 2014.