Transcript for Smugglers Brought Loaded Guns on Airliners
Now, to that investigation, the startling new images coming in, five men, including a delta employee, I accused of smuggling loaded guns on board planes, right into the cabin with passengers on board. The passengers had no idea. Tonight, one of those men, police say, seen here on this tape, arriving at JFK airport. Authorities say inside that backpack, 18 guns, seven of them loaded. ABC's senior justice correspondent Pierre Thomas. Reporter: Authorities say it was an inside job. Watch here as mark Henry, a former delta employee, calmly walks through the terminal at Atlanta's international airport, the world's busiest. What's shocking, prosecutors say, is those guns they say he's got inside the backpack. Police claim he took those loaded weapons as carry-on, right into the passenger cabin on that flight to New York. They could have easily put a bomb on one of those planes. Reporter: Investigators say Henry bypassed every security measure with the help of this insider, Eugene Harvey, a delta baggage handler in Atlanta. Harvey, an airport employee, used his security badge to come and go without being screened. After bringing the guns into a secure area, he allegedly gave them to Henry in an airport bathroom. Then Henry strolled onto a new york-bound flight. The guns were sold in Brooklyn, but what the suspects didn't know is that an undercover New York police officer was the one buying them. 153 guns smuggled on multiple flights between may and December, with Henry using his mom's unlimited flying pass as a retired delta employee. Henry and Harvey have been charged with gun trafficking violations. And David, what's so scary is that authorities say the scheme has been going on for five years. Pierre Thomas tonight, thank you.
This transcript has been automatically generated and may not be 100% accurate.