By Adam Benforado
What is the single most frustrating thing about the airport? Most people would agree that it's the security line, which presents us with a terrible tandem of unpredictability and uncontrollability.
Each airport is different. Some separate expert travelers from novices; others provide priority lines for those with first-class tickets. Latecomers who are going to miss their flights will be readily shuttled to the front at a few airports, while many others stand firm in the face of tears and tantrums.
Even at a single airport, you never know what you're going to get. I recently flew out of Philadelphia on US Airways on consecutive Thursday evenings. The first time, I was through security in 10 minutes and had time for a drink. The second, it took more than an hour and I nearly missed my flight.