【Watch Officetel: Lover Friend Online】

One firefighter found his own way to remember September 11.

To mark the 15-year anniversary of the attacks,Watch Officetel: Lover Friend Online firefighter Jason Hardingwore his uniform to climb 110 sets of stairs on a StairMaster at a Planet Fitness in Tennessee. Each of the Twin Towers had 110 floors.

Lezlie Bauler, a front desk associate at the gym, shared the photo on Facebook.

"This man asked if it was okay for him to climb 110 sets, fully suited, of stairs in honor of his fallen brothers and sisters for 9-11," Bauler posted on Facebook, accompanying a photo of Harding on the exercise machine.

"Yes, sir, you can. I am not one to get emotional, but a few tears were shed. Thank you for your services," she wrote.

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