Terrorist plot? Mile-high romance? FBI cracks airline security mystery
In the moments before the F-16 fighter jets were summoned, the crew of Frontier Airlines Flight 623 feared that a passenger’s frequent and unusually long trips to the aircraft lavatory on Sept. 11 were a sign that a potential terrorist plot was underway.
Later, when the plane had landed in Detroit, reports suggested that the peculiar bathroom breaks had been a reckless tryst between two passengers determined to “make out.”
In the cold light of Sept. 12, however, the Federal Bureau of Investigation revealed the rather mundane truth: It was simply a single man having an off-color day.