Kiwi firefighters are heading to the United States to scale Freedom Tower on the site of the former World Trade Centre in honour of those who died on September 11, 2001.
The firefighters from Henderson Fire Station will complete a gruelling climb of 1356 steps at the Columbia Centre in Seattle on Sunday, before heading to New York to run up 72 floors of the Freedom Tower a week later - all while wearing full firefighting gear, including an oxygen tank.
The team will compete in the New York City Firefighter Stair Climb, honouring the 343 firefighters and 23 police officers who died in the terror attacks on September 11, 2001.
Dillon Harris, one of the firefighters taking part, said they have been training for the trip by running up the "stairs of doom" at Kennedy Park in Castor Bay.
"They're stairs of doom for a reason - they're short, they're sharp and they're nasty," he said.