According to the online flight-tracking service Flight Aware, the red and white plane is a 43-year-old Learjet 55 registered to Jet Rescue Air Ambulance, which has operations in Miami and Mexico.

Matt Rourke/AP Share PHILADELPHIA (AP) — At least seven people were killed and 19 were injured when an air ambulance crashed ... plane plunging in a streak of white and exploding as it hit ...