Originally Posted by PornoStar69

Die Hard - based on terrorists taking over a TOWER
Die Hard 2 - based on terrorists taking over PLANES
Die Hard 3 - based on terrorists in NEW YORK

Die Hard released 1987

BUSINESSMAN. I know. I know. It sounds crazy. Trust me. I?ve been doing it for nine years. Yes, sir! Better than a shower and a hot cup of coffee.
JOHN MCCLANE. Okay.
(The airplane stops. Passengers rise, start to take down overhead luggage. McClane does this, but as he opens the door above, the Businessman blanches seeing McClane?s Beretta pistol peeking out from his jacket. Recognizing the look, McClane smiles reassuringly.)
JOHN MCCLANE. It?s okay. I?m a cop. Trust me. I?ve been doing this for eleven years.

Comparing the sum of experience each has in their respective fields the Businessman has nine years and McClane eleven years - 911