Van examined the television again. That television scene looked plenty bad. Van was no great expert on avionic systems, but he knew what any system-reliability expert would know about such things. He knew that it was very, very unlikely that FAA air traffic control at Kennedy and LaGuardia would ever let a jet aircraft just wander accidentally into a downtown New York skyscraper. New York City had a very heavy concentration of TRACONs and flow control units. So that couldn’t be a conventional safety failure.