kind of skirt breech at one of the nation's largest airports. Jfk here in new york. A brazen and bizarre incident this summer, a jet skier who hopped a fence and exposed security problems. Jim avila... See More
kind of skirt breech at one of the nation's largest airports. Jfk here in new york. A brazen and bizarre incident this summer, a jet skier who hopped a fence and exposed security problems. Jim avila spoke to him in an abc news exclusive. Reporter: America's airports aren't as secured as the public might think. From rogue pilots climbing the fence at st. George, utah, driving a jet into the terminal. Tower, what's the protocol of something like this. Reporter: Perhaps the jaw-dropper of all security breakdowns came on an august night. At the water-logged hands of a water skier off of jfk in new york. I walked right across without any type of problem. I didn't get seen. Reporter: He wasn't out to expose anything. When his jet ski broke down, forcing him to swim to shore, only to end up on an airport security fence, he thought that he would be spotted and saved. The whole intention was to Reporter: His next move showed everybody even the best airports with thousands of money spent on security plans can fail in dramatic fashion. I thought, again, now I'm over the fence. I'm in the airport. They're going to help me. Nothing. Reporter: He walked across one taxiway. He walked into delta terminal 3. Danny was arrested. Ultimately con victimed of misdemeanor trespassing. . The port authority said that it's increased patrols and demanded an explanation from its security firm. I definitely think it's time to look at perimeter security. Reporter: Jfk, at least, now made more secured because of a lost skier. Jim avila, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.