WPXI: Man with prosthetic leg says he missed flight because of TSA screening The Transportation Security Administration is looking into whether anything was done wrong when a man with a prosthetic leg was screened Monday at Pittsburgh International Airport. The man missed his flight because he said TSA agents were not efficient in screening him. Chris Griffin said he was pulled to a separate screening room after an explosive residue, that he said was chemicals used to clean pools, was found on his hand. According to TSA regulations, if explosive material is detected, the passenger will have to undergo additional screening.While Griffin said he understands why he was pulled aside, when he was checked in the room, he said TSA agents didn't seem to know what they were looking for and repeated screenings that were already performed on the prosthetic leg. Griffin said he told the agents he only had 15 more minutes to make his flight, but he said they didn't work any faster. He ended up missing his flight to Newark.