1. A terrorist looking to shoot down a civilian aircraft flying eastbound out of JFK International Airport never would have been positioned so far east where the flight would normally be flying at an altitude of 30,000+ feet.
2. From what I’ve seen, TWA Flight 800 was flying far below its normal altitude at that point in its flight that night — to make way for a northbound flight into Providence, Rhode Island that was running behind schedule. A terrorist wouldn’t have known this in advance when plotting an attack using a surface-to-air missile.
Neither would people running a live fire drill expecting an incoming threat from an unknown direction at a far below normal flight path. They might assume it was spoof squawking with a commercial transponder as a surprise countermeasure.
Seems I remember the USS Vincennes mistaking an Iranian airliner for an inbound fighter jet, about 2 years earlier. Perhaps exactly 2 years in the mohammedan calendar?
OK.