Adam Kaufman

Adam Kaufman work at CTU Los Angeles during Day 3. He frequently works with Kim Bauer and Chloe O'Brian, and is considered one of the better people in his position.

Before Day 3
Kaufman worked for CTU in some capacity, as he conducted Chloe O'Brian's background screening. It is unknown when he moved to CTU Los Angeles, though 24: The Game may answer a couple of those questions.

Day 3
Early in the he butts heads with Kim, says that she only has the job because of her father, but when Kim shuts down her system, he agrees to help her out. He is a frequent part of CTU operations during Day 3.

Because he did Chloe's background screening, he was able to tell Kim Bauer that Angela was not, in fact, Chloe's child and starts a chain of events that leads to Kim Bauer's discovery that Chase Edmunds is the baby's father.

He assisted Chloe with the sting operation on the Salazar camp, though he felt that because of the situation surrounding the baby that Chloe shouldn't be in command. His concerns were later proven to be unfounded.

His sister becomes infected with the Cordilla Virus which causes him some distraction, though he eventually gets back on track.

After Day 3
It appears that Adam Kaufman is no longer with CTU LA following the events of Day 3. It can be assumed that Kaufman either was relocated or fired following Erin Driscoll's appointment as head of CTU LA. His whereabouts are unknown.