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A doctor who claims to have been among the first at the scene following the 9/11 terrorist attack has shared unseen photos from the tragic day.
Dr Emil Chynn was out walking his dog on 11 September 2001 when he saw the Twin Towers burning.
Putting his roller blades on, he rushed to the scene to see what was going on and how he could help.
Chynn, now 50, had worked at a local hospital during a previous terror attack scare, meaning he knew he would be best assisting at the scene, rather than waiting for victims to be admitted to hospital.
When he arrived at the scene, he found he was surrounded by debris and smoke - but rapidly got to work setting up what he claims to have been the first triage centre on site.
The doctor, who lives in New York City, has now decided to release the photographs he took during the week he spent volunteering at the site, hoping to demonstrate the kindness of strangers in such a heartbreaking time.
Chynn said: "When I saw the plumes of smoke coming from downtown I knew I had to go down and see what was going on.
"Having worked in a hospital during a previous terror attack scare, I knew that I would be more use at the scene if people were injured, so I put on my roller blades and headed down.
"As soon as I arrived I was surrounded by smoke, debris and paper inches deep, but I had to go and find the buildings.
"Along the way I met other volunteers and after about 30 minutes of looking we found the remains of the Twin Towers, which were only about three stories high.
"The scene was awful, people were trying to clear debris and body parts from all over the place.
"I quickly did what I could to help and - as the first physician on the scene - set up the first triage centre.
"I was on the scene volunteering for about a week and captured these photos whilst I was there.
"They were captured on a film camera, so took me a while to get them developed, but as soon as I got the physical photos back I knew I had to share them.
"As distressing as the time was and the photos are, they show the pure compassion that people have for strangers.
"Everyone looks back on what happened in dismay at the human race instead of how a city came together to risk their lives and help people they didn't even know."
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