John Hetlinger is 82 years old.
It turns out he’s a bit of a genius and says he flew jets for the Navy and helped fix the Hubble Space Telescope for NASA.
Now, he’s got a new passion – singing metal songs at karaoke joints.
He was on America’s Got Talent … and somehow made it through this round.
I mean, it’s a cute one-time performance, but this guy seems to be a one-trick pony.
Would you actually PAY to see this guy perform?