Kenneth Proctor

Kenneth Proctor was a DoD agent killed during 24: Conspiracy.

Conspiracy
Martin Kail found a secure file on James Sutton's desk that had the names of four DoD agent, one of which had already been killed. There also was Chris Jarvis, Kenneth Proctor and Steven Kinsey. Soon after Sutton tells Martin that Proctor and Kinsey are dead, confirming his suspicions that Sutton was the mole at CTU.