Day 2: 8:00 P.M.-9:00 P.M. - S2-E13
Deliberate mistake: The blue and white airplane when the male terrorist tries to take off has the following registration: N34G5 This seems to be a deliberate mistake as only the following N registrations are officially possible: N plus one to five numbers (N12345) / N plus one to four numbers and one suffix letter (N1234Z) / N plus one to three numbers and two suffix letters (N123AZ).
Chosen answer: Nobody knew, not even the writers, until at least halfway through the season when they were writing the end. They wanted to keep all options open.
Nick N.