Next year he wants to become the world's oldest skydiver.

You’re only as old as you feel. Especially when you feel like ziplining over a valley, 800 feet in the air.

To mark his 102nd birthday, Glenn Quillin, a retiree from Carlsbad, California, decided to go ziplining, allegedly setting the record for the oldest person to do so. The previous record holder (not confirmed by Guinness) was 90 years old, according to Quillin’s grandson, Mike Welch.

Quillin and Welch organized a trip to La Jolla Zip Zoom park, a mountainside attraction specializing in “extreme” rides where passengers travel at speeds up to 50 miles per hour.

“He's always had an adventurous spirit and he loves doing things that make people's jaws drop,” Welch told the Los Angeles Times. “They had suggested that he skip one of the shorter runs today and take a rest, but he wanted to do them all. He just charged through it all and enjoyed the whole thing.”

“He's braver than most of the people who come out here. We've had people quit on the first one, and he couldn't wait to do them all,” said a manager at La Jolla Zip Zoom.

Quillin was never the stay-at-home type. A World War II veteran, he worked on the Manhattan Project during the war, then on to Hughes Aircraft. You could say he’s used to the altitude. And although now he lives in a retirement community, according to the L.A. Times, he still visits the gym several times a week.

Quillin hopes to mark his 103rd birthday by setting yet another world record: the world’s oldest skydiver. The current record holder claimed the title at 101.

“I have my eye on that airplane,” said Quillin. “I wouldn't mind doing that again, not one bit.”