After seeing the Twin Towers ablaze on September 11, 2001, as he walked his dog, Dr Emil Chynn, now 50, said he put on his roller blades and rushed to the scene offer assistance.

Chynn said he worked at a local hospital during a previous terrorist attack scare, so he knew that he would be more of a help at Ground Zero,instead of waiting for victims to be admitted to hospital.

He has since revealed the photographs he took during the week that he volunteered as a doctor on the scene of the country’s most devastating terror attack.

More than 10,000 people were treated for injuries following the attack that saw two hijacked planes crash into the twin towers of the World Trade Center, one plane crash into the Pentagon in Washington DC, and one plane slam into a field near Shanksville, Pennsylvania.