Skydiving is a once in a lifetime experience for most people, but not for Seattleite Stuart Williamson. He jumped last year for the first time, on his birthday, at Harvey Field in Snohomish.

Williamson took another jump yesterday, again on his birthday — his 100th birthday.

“I’ve never been particularly much into flight or anything like that, but I’ve always liked to have done things with a thrill attached to them. As I got older I thought, well, you know, what am I going to do for new thrills, cause I’ve done many things in my life? Why not jump out of an airplane and see what that is?” Williamson said.

Williamson is originally from Calgary. He later worked in New York City, in graphic arts, during the Mad Men era.

“The time that I was back in New York was precisely at the time of the two-martini luncheon. Mad Men,” he said. But he said he wasn’t much of a Mad Man himself.