He's done it in practice.

Tacoma's Mark Kirsch, owner of World Strongman Entertainment, is going to try to pull a Boeing 767 at least 100 feet this Saturday at Boeing Field. The event is a fundraiser for Big Brothers Big Sisters of Puget Sound, and it coincides with the 80th anniversary celebration for King County International Airport.

Originally, Kirsch just wanted to pull a measly little 737, but he had to go up a few numbers to the 767 because that was the only plane available to him.

"I couldn't believe it," Kirsch said of his first close-up with the object he expects to tow (on foot, by the way, in case that wasn't clear earlier). "When I first saw it, I said 'no way.'"

But in practice last week, on July 15, he towed the enormous 202,000-pound plane the target distance. Saturday, he'll be working against a slight slope, but he said he thinks he can do it.

"The secret is making everything fire at one moment to apply all the thrust at once," Kirsch said. "Then you just have to keep it moving."

Kirsch, a Wilson grad, class of 1998, said it takes about six years to train and condition one's body for this type of stunt. To simulate pulling an enormous object, he straps on a harness that is roped to a rack bolted to the ground. Then he tries to pull the rack out of the ground. It's an impossible task, but it works the right muscles, he said.

Saturday's celebration starts at 10 a.m., and the plane pull should take place around 11 a.m. In the meantime, here are a few photos from last week's practice session: