In today's Air Traffic Out Of Control Fly By we have a recent clip from a close call at JFK. At around 8:45 p.m. last Friday evening, Delta Air Lines Flight 1943 was taking off from Runway 4L when  American Airlines flight 106 crossed the same runway.  In this recording, you will hear the moment an air traffic controller noticed the incident and a potential collision was avoided.  The Delta aircraft rejected its takeoff run and stopped approximately 1,000 feet from where the American Airlines wide body jet had crossed.  Investigations are being conducted by the NTSB to get to the bottom of why this occurred.