Everyone knows the story of the planes that hit the Twin Towers.

Most people will remember the plane that struck the Pentagon,

and there was a fourth plane that morning, United Flight 93.

Its story is extraordinary, not because of what it hit, but because of what happened on board.

What happened on that flight is extraordinary, and in some ways almost impossible to believe,

because the passengers weren't just victims that day, they became heroes, ordinary men and women faced with an unimaginable choice.

Obey the hijackers, all fight back. And what they did next changed everything and saved countless lives.

This is Red Rum. Stories about the true victims of crime.

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September 11, 2001, began with the kind of weather pilots dream of.

The sky above Newark, New Jersey, was a flawless blue, scrubbed clean by a

cold front that had pushed through the night before. The air was crisp, cool and perfectly clear,

with visibility stretching for miles in every direction. There were no storm warnings, no delays for

weather. It was, in every sense,

a perfect flying day. At Newark Liberty International Airport, the morning routine was already

in motion before dawn. The terminals buzzed softly with the energy of a weekday morning crowd.

Not the chaos of a weekday morning crowd.

Not the chaos of a holiday period, but the steady hum of business travellers,

people going on small holidays and families moving towards their gates.

Overhead announcements echoed across polished floors as security lines shuffled forwards.

Baggage carts rattled along the pavement outside,

their wheels squeaking under the weight of luggage bound for every corner of the country.

...