to improve short-term memory. prevagen. healthier brain. better life. tucker: last week, in an exclusive investigation for this program, hillary vaughn showed how the tsa allowed a major security loophole to exist at our nation s airports. every day across the country, food catering enter and leave airports without facing proper security screenings, an obvious problem and they could be exploited by terrorists. we are happy to report that our investigation apparently had an effect. hillary vaughn joins us tonight. hey, hillary. we just learned the tsa sent out an internal memo this week following our report exposing the food truck loophole, telling tsa inspectors, changes need to be made to the food drug screening process. last week, we gave you a trove of internal tsa documents that show catering trucks roll through our airport gates unchecked by tsa.