Photos: Thousands take the Tucson Tower Challenge in remembrance of 9/11 terrorist attacks
More than 3,000 people came to participate in the annual 911 Tower Challenge at Arizona Stadium on Sept. 11, 2019, marking the 18th anniversary of the terrorist attacks on the United States.
The World Trade Center's Twin Towers each had 110 floors and 2071 steps. Participants take the challenge to walk those steps at Arizona Stadium in Tucson.
Tower Challenge
Zachary Dietrich holds a flag as he makes his way up a set of stairs with the rest of Pima County Sheriff's Department recruit class 19-2 during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Pascua Yaqui Firefighter-paramedic Dennis Rodriguezduring makes his way up a set of stairs during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Pascua Yaqui Firefighter-paramedic Dennis Rodriguezduring makes his way up a set of stairs during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
A man carries a hose with the names of fallen emergency personel from 9/11/2001 during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Attendees of the annual 911 Tower Challenge gather in the field of Arizona Stadium before starting the climb Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
A woman tears up as recordings from 9/11/2001 play during the opening of the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Zach Graham carries an American Flag as he climbs stairs during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Firefighters make their way down a flight of stairs with other participants of the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Tom Bramel of Bisbee rests following the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Participants run across the field to another set of stairs during the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Tower Challenge
Participants ring a bell following the 911 Tower Challenge at Arizona Stadium Wednesday morning, Sept. 11, 2019. Participants in the annual event climb 2071 steps representing the 110 floors of the Twin Towers in New York City.
Josh Galemore
Photojournalist
Since 2014, thousands of first responders, military members, and their families have attended the annual 9/11 Tower Challenge in Tucson to pay tribute to the nearly 3,000 lives lost on Sept. 11, 2001.
Please tell us your memories of — and takeaways from — that day and its aftermath.
Please tell us your memories of — and takeaways from — that day and its aftermath.