So you finally got TSA PreCheck. Here's how to avoid being the most annoying person in line and get through faster.

So you finally got TSA PreCheck. Here's how to avoid being the most annoying person in line and get through faster.

TSA PreCheck is an express airport security line for pre-screened travelers.Jeffrey Greenberg/Universal Images Group via Getty ImagesTSA PreCheck is an airport-security express lane that can save you time while traveling.The program has more members than ever — over 20 million passengers are enrolled.Travel expert Gilbert Ott said these etiquette tips can keep you from holding up the line.Those of us who've had TSA PreCheck for a while have seen…