A 28 year old British man survived a stunt that no one else ever has. He is thought to be the first person to swim across the Hoover Dam reservoir.
Aaron Hughes and his buddies were wrapping up a 37 hour bender when Hughes took his dangerous dive.
He told the Daily Post: "It was around 45-50 degrees outside and we were on a stag do in Vegas. You go to Vegas to have fun, don't you? We made the Hangover movie look tame."
275 people have died at the site of the dam, which is on border of Arizona and Nevada.
Hughes got lucky, officials say the only reason he wasn't killed is because nine out of the 10 hydroelectric turbines were not operating.
Police arrested Hughes after his stunt and he was fined $330.
"They were like 'nobody has ever done this before.' So in the end I just got a fine," Hughes told the Daily Post.