A British woman who was in one of the Twin Towers on 9/11 says she can "still hear the screams" of the people caught in the inferno.
Janice Brooks, 61, from east London, had moved to New York a couple of weeks before the terror attack that horrified the world.
She took an elevator to the 84th floor of the South Tower to clock in for her job at international brokerage firm Euro Brokers.
Janice said she was frightened by a massive bang, but colleagues told her to relax and reassured her it was likely caused by construction workers outside the building.
The Londoner returned to her desk and continued to get on with her day.
She was completely unaware of the chaos about to ensue when the first American Airlines plane hijacked by al Qaeda terrorists smashed into the nearby North Tower.
When Janice heard that the first tower had been hit, she made the split-second decision to flee down the staircase.
It was just moments later that the second plane hit the top of the building, engulfing it in flames.
Janice and some co-workers fled down the stairs of the 1,362ft South Tower, Sky News reports.
"I was knocked to the side, I didn't fall down but I was jostled to the side," Janice told a Sky News podcast about the attacks.
"Then I heard this almighty screaming sound, a woman screaming the scream of nightmares, it's a scream that I can still hear in my head... she walked through the door and her eyes were full of blood."
On arrival outside she found emergency service workers frantically assisting the injured and chunks of rubble between clouds of dust.
"When I reached the area outside the building I could hear this 'thwacking sound'," she says, "I later found out it was the sound of people jumping from the building and hitting the ground."
Janice survived the terror attack, but 61 fellow Euro Brokers employees lost their lives.
Almost 3,000 people were killed on that day.
