A pilot of Huey transport helicopter commandeered by Sergeant Griffin to rescue Nate. He realized that Griffin is about to turn to an infected and ordered Nate with another fellow GI to shoot him. When Griffin became infected, Halley was attacked by him and lost the control of Heli, resulting the crash. He survived but was captured by Trang's men. He reveals he told Trang the location of Whitenight and pleades for Trang to let him go because he gave them information. Halley was then thrown into a cage wth the infected Griffin who killed him. The player can look into the cage to see Halley being ripped apart but cannot stop it as the player has no guns.