|Santa Clarita, California|
|Country:||United States of America|
|Season(s):||1, 2, 4, 6|
|First episode:||"Day 1: 4:00am-5:00am"|
|Last episode:||"Day 6: 9:00am-10:00am"|
Near Santa Clarita, Ramon Garcia invaded a convenience store run by Frank Davies. Davies was killed and Kim Bauer was held hostage. Kim escaped, and officers led by Deputies Raynes and Nirman shot and apprehended Ramon. Raynes then arrested Kim after her confession of involvement in certain activities earlier in the day, and drove her to a sheriff's station in Santa Clarita where she was interviewed by Sgt. Bob Amis. She then called Tony Almeida to contact the DA's office, and phoned Miguel at the hospital where he was being treated.
After Day 3
At approximately 7:00 AM on Day 4, a commuter train travelling near the city of Santa Clarita was derailed and wrecked by a truck bomb, killing at least 32 people. A terrorist named Dar stole a briefcase holding the Dobson Override device from the McLennen-Forster courier named Brody who was riding the train.
Terrorist leader Abu Fayed used an abandoned factory in Valencia as a staging area for attacks in and around Los Angeles, including an attack using a suitcase nuclear device. At 9:58AM, during a raid by CTU, one of Fayed's suitcase nukes was detonated by his engineer, Hasan Numair, killing over 12,000 people.