New York City

New York City (also known as New York), New York, is the most populous city in the United States of America, and the site of most of the action during the novel Operation Hell Gate.

Operation Hell Gate
During this time, New York was not home to a Counter Terrorist Unit, primarily due to beaureacratic red tape.

Jack Bauer, after having captured a drug dealer named Dante Arete in Los Angeles, went with the captured man and an FBI agent named Frank Hensley to New York. However, Hensley was a traitor, and killed two Federal Marshals, framing Bauer.

Bauer then spent the rest of the day trying to clear his name, running across former IRA terrorists, Latino and Asian gangs and even a Middle Eastern assassin.

After Operation Hell Gate
New York was the home to the World Trade Center, which was attacked and destroyed by terrorists sometime between the events of Operation Hell Gate and Veto Power, on September 11, 2001.

This caused a major shake-up of United States intelligence agency and counter-terrorism protocol.

A Counter Terrorist Unit was formed in New York, some after Operation Hell Gate and Season

Day 3
Towards the end of Season 3, CTU New York, along with the New York Police Department manage to secure a vial of the Cordilla virus, that was attached to a rail.

Day 4
During Season 4, New York was theorised several times, along with Washington, D.C., to be the intended target of attacks made by the Habib Marwan.

However, in the first case, the James Heller of the attack was in Los Angeles, and, in the second case, the target was Los Angeles itself.