Here's one of the more unusual tributes to the victims of the September 11 attacks you'll ever see.

A firefighter decked out in his uniform walked into a Planet Fitness in Tennessee and then kept on walking -- right onto a stair climber in honor of those who perished on that day.

The firefighter, Jason Harding, said, "When I went to the gym this morning at 6 a.m. before coming onto shift I was only wanting to honor the fallen heroes and their families on this day 15 years ago."

"Many stated my act brought them to tears but little do they know, their support did the same for me," he added. "I want to thank everyone that shared and commented in response to this post. It it proof that although we seem divided as a country at times, we unite at the most crucial times."

It was certainly a moving -- literally -- way for Harding to pay his respect (and definitely more appropriate than this tasteless tribute).

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