Chalmers: Ross.
Bennet: Albert Edward Renick, used car salesman, Chicago.
Chalmers: Who's Renick?
Bullitt: He was the man who was shot in the Hotel Daniels. You sent us to guard the wrong man, Mr. Chalmers.
Bullitt: Who else knew where he was?
Walter Chalmers: What?
Bullitt: Who else knew where he was?
Walter Chalmers: What are you implying?
Bullitt: Well, they knew where to look for him, and they used your name to get in.
Walter Chalmers: Are you suggesting I disclosed his whereabouts?
Bullitt: Well, somebody did. And it didn't come from us.
Answer: Airport security in the late 1960's was not nearly as thorough as it is in present day. Metal detectors didn't become commonplace at airports until the early 1970's.
BaconIsMyBFF
It was the D.B. Cooper hijacking of a Boeing 727 commercial jet in 1971 that radically changed how airport security was handled. Before that, there was virtually little to no pre-boarding security checks.
raywest