Columbia Building

The Columbia Building was a complex in the city of Washington, D.C..

Day 7
During the questioning of Gabriel Schector, Alan Tanner was posted on the roof of the Columbia Building and shot and killed Schector before Jack Bauer and Renee Walker could interrogate him after him and his guard tried to kill the two agents.

A few minutes later, FBI Agents and TAC teams surrounded the Columbia building, attempting to apprehend the sniper, though he was able to escape through the perimeter due to a mole in the FBI.