I've mentioned over the years it's possible Cooper could of been a frequent flyer and put two and two together while watching from the airport. the knowledge could of been obtained by asking questions. it was pretty easy to get around the airport in 71 vs today. is this the way it happened, I haven't a clue. I think a janitor could gain a lot of information while working at NASA. I fly my simulator but it doesn't make me a pilot.
Was it a employee, two entries, so far in the files discount any possibility of one of there own..political reasons, I'm not so sure, they usually make that very clear at the beginning. a grudge was brought out by Tina, or it would of never been known. it appears that money wasn't the only reason based on his statement.