Dog days of summer: Airport therapy via wagging tail

In this photo taken Tuesday, May 21, 2013, Travelers pet airport therapy dogs as volunteers with Pets Unstressing Passengers (PUPs) walk around the Los Angeles International Airport terminal. The Los Angeles International Airport has 30 therapy dogs and is hoping to expand its program. The dogs are intended to take the stress out of travel: the crowds, long lines and terrorism concerns. (AP Photo/Damian Dovarganes)
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