A Southwest Airlines passenger exited a plane through a rear door while the aircraft was taxiing to a gate at Phoenix Sky Harbor International Airport, airport officials reported. The incident happened in the morning on Flight 4236 from Colorado Springs. The captain stopped the plane and notified Air Traffic Control, Southwest said in a statement that afternoon. The passenger on board who jumped down to the ramp from a rear galley door was later identified as 30-year-old Daniel Ramirez.