A group of disabled veterans is marking the ​13th anniversary of the Sept. 11 terror attacks by tackling some of the toughest climbs at Yosemite National Park.

The team is climbing with Paradox Sports, a nonprofit that helps disabled vets enjoy life-affirming experiences. It was founded by veteran DJ Skelton, who lost an eye and half of his jaw in Iraq.

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Cody Elliot strapped on his climbing leg for the mission. The 24-year-old Marine was injured by an IED in Afghanistan.

The group is climbing as a wildfire rages nearby.

Once they reach the summit, they will have a moment of silence before celebrating their achievement.