ATLANTA - A man is describing the tense moments when he stopped someone from breaching the main TSA checkpoint at Hartsfield-Jackson Atlanta International Airport late last month.

Right place, right time

What we know:

Forty-year-old Fabian Leon remains behind bars in Clayton County, two weeks after the incident.

Mark Thomas was waiting to be screened around 8:30 a.m. on Oct. 30 when he saw the chaos unfold.

"They yelled breach! They said everybody freeze," he said. "I just saw this guy trying to get through security and TSA trying to stop him."

Security breach at Atlanta airport

The backstory:

According to an Atlanta Police Department report, witnesses told officers Leon entered the checkpoint running full speed, knocking people to the ground.

Police said he made it past the d

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