Lynn McGill was a high-ranking official at Division, sent to oversee operations at CTU Los Angeles during the Sentox nerve gas crisis on Day 5. High-strung and controlling, McGill had a reputation for firing most of his subordinates soon after taking command of a new office. As pressure mounted from the White House to stop the terrorists, he became increasingly erratic and paranoid of his employees' activities, eventually leading Audrey Raines and Curtis Manning to invoke Section 1.12 of the CTU charter and remove him from his post. Bill Buchanan, arrested earlier for defying Lynn's orders, was reinstated as director.