Lanza was a CTU New York agent active during Day 8.
When Chloe O'Brian locked herself on the server room at gunpoint, Lanza went with Brian Hastings to break the locking mechanism. After a few minutes, he managed to open the door. ("Day 8: 4:00am-5:00am")
The next afternoon, Lanza was one of the agents deployed in the CTU Mobile Command Unit at the United Nations building for the signing of the peace treaty between Presidents Allison Taylor, Dalia Hassan, and Yuri Suvarov. Chloe told Lanza to make sure that Nate Burke gave Cole Ortiz the tactical gear necessary for him to take command of the operation. ("2:00pm-3:00pm")
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