Williams (CTU)

Williams was the CTU field agent sent by Tony Almeida to investigate the Bauer residence in Day 1.

Assassin Jovan Myovic went to the Bauer house after he lost sight of Teri and Kim. Tony sent Williams to check out the Bauers' home in case one of them went there. Williams arrived at the house before Teri and Phil Parslow did and was slain by Myovic.

Note
Williams was killed offscreen but his body was shown as the timer went to six o' clock.