LOS ANGELES (NBC) — You could fill a book with everything 82-year-old John Hetlinger has done in his life, but it was an unexpected performance on primetime television that’s given him more than his 15 minutes of fame.

“I served in the Navy four years,” John said. “Two years in a patrol squadron in Okinawa.”

John was a Navy pilot, later a minister and then an aerospace engineer for Ball Aerospace in Boulder where he worked on a team that made repairs to the Hubble telescope.

“The Lord has led me through some exciting times,” John said.

After Tuesday night’s broadcast of America’s Got Talent, John might consider adding another chapter to his book. The 82-year-old’s jaw-dropping performance of “Bodies” by heavy metal band, Drowning Pool, brought the crowd to its feet.

“I didn’t know two and a half thousand in the audience would react the same way that 30 drunks in the bar do, but they did!” John said.

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