Step Up to Honor the Fallen Firefighters in full gear, police, military and bomb squad personnel march alongside civilians of all ages, abilities and backgrounds as they climb 2,071 steps representing the 110 floors of the twin towers in the 9/11 Tower Challenge, Sept. 11. Participants pause briefly to view photographs of fallen heroes that line the stairs, vowing to “never forget” as they honor those who lost their lives on Sept. 11, 2001, and...