According to KYTN, Lieutenant Rick Stacks, with the Union City Fire Department, said the event was held to pay tribute to those who lost their lives on 9-11 in their service to help others.
Firefighters climbed all 13 floors of the 199-foot tower at Discovery Park ten times during the event.
Participants also wore their actual gear, and carried all lifesaving equipment used during an actual emergency.
As the firefighters climbed the stairs, Rev. Tony Keeton, pastor of Union City Baptist Temple and chaplain of the Union City Fire Department, read the names of the 343 New York firefighters that lost their lives that day.