Remembering 9/11: You Might See Firefighters On Your Gym’s Stair Climber SaturdayRemembering 9/11: You Might See Firefighters On Your Gym’s Stair Climber SaturdayIf you witness a firefighter on a stair climber this Saturday, they're paying tribute to their fallen brothers & sisters who didn't make it out on 9/11.Jahna MichalJahna Michal