Nadia Yassir was the Chief of Staff at CTU Los Angeles during the events of Day 6. She was implicated as a mole and accused of leaking CTU's satellite data to terrorists. However, she was later proven innocent and went back to work. When Bill Buchanan was forced to step down, he was successful in pushing for Nadia to replace him as the Interim Director of CTU. She led CTU for the rest of the day, until Division could send over a replacement.