He helped popularize the personal computer and just discovered a long lost warship.

That’s another day in the life of Paul Allen, who co-founded Microsoft with Bill Gates and became fabulously wealthy in the process. The 64-year-old hasn’t been actively involved with the parent of Windows and XBox for decades, but has put his roughly $20 billion fortune to good use. Apart from owning three professional sports teams that ply their trade in the NFL, NBA and MLS respectively, a research vessel he funds just discovered a Navy ship that was sunk late in the Second World War.

The billionaire announced Saturday that the crew on his Research Vessel Petrel located the USS Indianapolis’ wreckage on the floor of the North Pacific Ocean, about 18,000 feet below surface. The Indianapolis went down on July 30, 1945 after it was torpedoed by a Japanese submarine and more than 800 of the 1,196 service members it was carrying perished.

“To be able to honor the brave men of the USS Indianapolis and their families through the discovery of a ship that played such a significant role during World War II is truly humbling,” said Allen in a statement. Ships funded by the owner of the Seattle Seahawks and the Portland Trail Blazers have also discovered the wreckage of ships that flew under Axis flags during World War II.

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Bill Gates’ old friend is among a select group of bold-faced names who’ve had lucrative first careers that they quit or aged out of, before becoming stars in a second field. Here are four others.

As co-founder of what was then called Apple Computer, Steve Wozniak was the geek genius to Steve Jobs’ Michelangelo. Wozniak reportedly is still on stipend with the world’s most valuable company, though he left the tech giant as a full-time employee in 1985. He went on to be chief scientist at fusion.io, a flash memory company that was later acquired for about $120 million and was an early funder of the Electronic Frontier Foundation, a non-profit that protects your digital privacy.

Michael Jordan will forever be remembered as a basketball great and Chicago Bulls legend, but also had a reasonably successful stint with as a minor league baseball player with the Chicago White Sox. The 54-year-old boy from Brooklyn is also a paper billionaire due to his ownership stake in the Charlotte Hornets, a pro basketball team.

Before she became a fashion designer whose garments clad everyone from Gigi Hadid to Blake Lively, Victoria Beckham was a star in THE girl band of the 1990s. The Spice Girl has sold more than 85 million records globally, and the female half of Posh & Becks went on to launch her successful eponymous fashion label in 2008.

Prior to becoming a morning television mainstay, Michael Strahan was a defensive end with the New York Giants. During his decade-plus career, the 45-year-old won a Super Bowl and was elected to the Pro Football Hall of Fame. He went on to co-host “Live!” with Kelly Ripa and is now an anchor on “Good Morning America.”