These photos are from 2015, so as another advance warning, their quality is pretty low. The fire truck belonged to New York City Fire Department Ladder Company 3 and it arrived at the North Tower of the World Trade Center on 11 September 2001.

The fire truck had two crews on as they were changing shift when the call came through and it parked on West Street whilst the fire-fighters went to investigate the unfolding disaster.

The fire-fighters got to around the 35th floor of the building and were killed when the building collapsed. The fire-fighters from this truck included Captain Patrick (Paddy) J. Brown, Lt. Kevin W. Donnelly, Michael Carroll, James Raymond Coyle, Gerard Dewan, Jeffrey John Giordano, Joseph Maloney, John Kevin McAvoy, Timothy Patrick McSweeney, Joseph J. Ogren and Steven John Olson.

The fire truck itself was crushed when the tower fell on it and when the site was being cleared, it was moved to JFK Airport where it remained for around a decade. It was moved to the National 9/11 Memorial in 2011, where it remains today.

This is a short documentary clip about Patrick Brown which was made by his sister, with a recording of the call he made from within the building. His call was very calm, polite and professional, a remarkable undertaking given what he must have been seeing.

These stairs, now moved into the National 9/11 Memorial Museum, were the steps that hundreds took to freedom as they escaped the damage done to the Twin Towers. They remained standing above ground after the site was cleared, another final stand, but they were nearly lost to the demolition process until their symbolic value was realised.

A news report of the importance of the steps.

On 18 July 2008, they shunted these stairs from their original location and lifted by crane their 65-ton weight into the site of the new museum.

Visitors take an escalator which sits next to the 38 steps of the staircase when they arrive and leave the museum.

There’s a video of their move here: