The TSA announced yesterday that it would expand an expedited program to 60 more airports this year, allowing tens of millions of travelers to keep on their shoes and belts at airport checkpoints. The TSA's Pre Check program will expand to 100 airports in 42 US states plus Guam and Puerto Rico. The agency also plans to expand the number of TSA Pre Check lanes at the existing 40 airports in the coming weeks. TSA Pre Check allows pre-approved airline travelers may leave on their shoes, light outerwear and belt while they go through security. They do not have to remove laptop computers from cases or take out approved-sized liquids out of carry-on bags before the bags are screened. Passengers who are eligible for Pre Check include U.S. citizens of frequent traveler programs who are invited to apply by participating airlines including Alaska Airlines, American Airlines, Delta Air Lines, Hawaiian Airlines, United Airlines, US Airways and Virgin America.