[pbear8]

3) How did yellow-tie guy get past the "security perimeter" at the airport, in order to get to the hanger that was outside the perimeter?

He found a hole... sometimes the enemy is cunning too.

Yes, so cunning that he removed the yellow tie and was, thus, in a very clever disguise.

[HairOfTheDog]

Appears he didn't have to change his tie ;~D