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Many Relatives of Sept. 11 victims are marking the anniversary of the terror attacks at ground zero with grief, gratitude and appeals to keep the toll front of mind after the passage of 15 years.

Among the heros of 9/11, which included the FDNY, NYPD, PAPD, EMS and other agencies, were the volunteers of Hatzolah.

Chevra Hatzalah played a pivotal role in the World Trade Center rescue operations. The very first ambulance to arrive at the World Trade Center following the first plane crash on September 11, 2001 was a Hatzalah ambulance. By the time the second airplane crashed into the second tower, there were two-dozen Hatzalah ambulances, including Hatzalah’s Communications and Command Center trailer, and more than 100 Hatzalah EMTs, paramedics, and doctors on scene. Before the buildings came down, ambulances had arrived from Hatzalah of Rockland County, 40 miles to the North, with additional medics and EMTs. During the first hour, over 125 patients were transported to area hospitals by Hatzalah ambulances.

At the south end of the Twin Towers, Hatzalah was the predominant ambulance service covering the disaster scene. Hatzalah ambulances transported numerous victims, including fire fighters and police officers.

In addition, Hatzalah assisted in the rescue of thousands of men, women and children, who escaped to the docks near the Holocaust Museum in Battery Park and helped evacuate these people onto boats headed for New Jersey . During the day some volunteers were missing, but, thank G-d, there were few casualties amongst the Hatzalah team – miraculously all Hatzalah members survived.

The following footage was released in 2015 for the first time to the public by YWN.

(AP)