Anchorage firefighters hit the gym to honor people killed in the Sept. 11, 2001 attacks.

For the seventh year, AFD crews participated in the Step Mill Challenge at the Alaska Club West. The goal is to climb 110 flights of stairs in 11 minutes. That’s as fast as the stair climber goes and is the number of floors in the World Trade Center.

Firefighters climbed in their full turnouts and breathing apparatus which weighed about 70 pounds altogether.

“I was thinking about 9/11, when that occurred, what those people may have gone through,” said Luke Duffy, a firefighter/EMT at Station 1. “I’m going through a little bit of mental and physical pain on the step mill. So I try to dig deep and keep going because that 11 minutes is going to go by pretty fast.”

Duffy completed 89 floors in 11 minutes. His cousin Wes Tibbetts, set the record last year by reaching the 110-floor goal. This year Tibbetts hit 104 floors.

"You have to be pretty fit to do it and you have to be mentally tough as well," Duffy said.

Money raised from the event goes to the Fallen Firefighter Memorial.