What is the ideal structure of the lanes leading to the security checkpoints? I would suggest that the simplest method would be one lane for everyone, with the front person taken to the next available screening machine. NO EXCEPTIONS. If you are an employee, you wait in line; if you are going to miss your plane, you wait in line. If you are a pilot, you wait in line. If you are a screener for the TSA, you wait in line. If you are a platinum flyer, you wait in line.

That's the simplest (and most fair) approach. But do any airports do it?