Conrad Haas was an experienced sniper turned mercenary assassin, hired by the Sentox conspirators to take out former President David Palmer during the first minutes of Day 5. Later in the hour, Haas also took out Michelle Dessler, grievously injured Tony Almeida and unsuccessfully targeted Chloe O'Brian -- in order to frame Jack Bauer for the murders and obscure the motive for Palmer's death. Haas was eventually discovered and stopped by Jack, and after confessing to killing Palmer, Jack killed the defenseless assassin.