I went from consulting to being the CEO of Pittsburgh's airport. Here's what passengers don't see.

Christina Cassotis worked in consulting for years before becoming an airport CEO.

Laura Petrilla courtesy of Pittsburgh International Airport

• Christina Cassotis went from consulting to leading Pittsburgh International Airport.
• The airport's CEO said a lot happens behind the scenes that passengers don't see.
• Cassotis said there are also a lot of misconceptions about airports.

This is an as-told-to essay based on a conversation with Christina Cassotis, CEO of the Allegheny County Airport Authority...