When Cam Strocker drove into CTU's parking garage with a telephone repair van carrying Eddie Grant, Chris Jones, Scott Owen and Jack Bauer, Harding stopped them to check them in. He asked why it would take such a large crew to fix phone interference. Eddie claimed it was "a big job", so Harding let them through. The terrorists succeeded in bombing CTU despite Jack's best efforts. It is unknown if Harding was one of the victims of the blasts.
Background information and notes
The character's name is visible on his name tag as he speaks with Cam.