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In 1954, disaster struck again when a third Comet jet airliner crashed, throwing the future of commercial aviation into question.

Unravel a chain of critical events in the hours and minutes before the 9/11 attack.

Many of the 9/11 hijackers were flagged and screened with extra scrutiny before boarding their flights.

When the attack hits, US carriers are at sea.

Japan’s declaration of war on America arrived too late.

When the attack hits, US carriers are at sea.

A routine training mission goes wrong when pilots hit a wire.

The military launch an investigation into the incident.

The pilots reveal some startling details from the flight.

Thousands of choking, coughing patients flood the hospital.

Patients who had inhaled the MIC gas died almost instantly.

How did the deadly gas MIC escape into the air?

Students from central Russia board a fateful plane to Barcelona.

Crews were trained to follow air traffic control command.

A family member of a victim takes revenge.