PBA Provincetown Boston Airways.  I flew from Key West (EYW) to Miami (MIA) on this aircraft.  In 1981 no-one bothered with security.  There was a small coffee shop at the terminal which was separated from the ramp by a small white picket fence.  The crew were very laid back too.  They strolled out to the aircraft 5 minutes before departure time and the passengers strolled after them.  By the time we were all strapped in the engines were running and the aircraft was halfway to the runway.
Ken Fielding
CC BY-SA 3.0
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