Anthony Sadler, 23, who was one among three brave Americans who thwarted a terrorist attack by subduing a heavily-armed gunman on a Paris-bound train last month, appeared as a guest on Jimmy Fallon's "The Tonight Show" on Tuesday, according to The Sacramento Bee.

"Please just walk me through what happened," Fallon said, according to People. "I know you've probably told the story a thousand times."

"I could tell it to you all day, man," Sadler replied.

The Sacramento State University student said on Aug. 21 at about 5 p.m., he was sleeping on the train travelling from Amsterdam to Paris when he was woken up by a train employee dashing past him.

"That commotion wakes me up and I look back at my friends and they're looking back and they duck down," he said.

"There's the gunman coming in the train cocking an AK and I'm like, 'Is this real? Is somebody playing a joke?' The next second I look back at my friends [U.S. Air Force Airman Spencer Stone and Oregon National Guardsman Alek Skarlatos] and he's just like, 'Go.' Both of them get up and then I just followed them.

"Spencer hopped on him, a few seconds [later] me and Alek were there and then we got to beat him down a little bit," Sadeler continued, his statement was met with a roar of applause.

"In the midst of us beating him up he dropped the gun, so then he pulled out a box cutter and my friend Spencer had him in a choke hold and he tried cutting him a little bit, so then we had to beat him up a little more," Sadler said. "And then once he dropped that, we dropped him until he was unconscious."

"I couldn't have picked a better two to be with," Sadler said before revealing that they almost didn't catch the train that day. "We were having so much fun in Amsterdam we almost stayed."

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