TSA PreCheck™ is an expedited screening initiative that is currently available at 40 airports nationwide. Eligible passengers traveling on Alaska Airlines, American Airlines, Delta Air Lines, Hawaiian Airlines, United Airlines, US Airways and Virgin America can utilize the TSA PreCheck™ lanes for a quicker time through TSA.  Eligible participants use dedicated screening lanes for screening benefits which include leaving on shoes, light outerwear and belts, as well as leaving laptops and 3-1-1 compliant liquids in carry-on bags. Once your TSA PreCheck™ application is approved it is valid for five years.