After the USS Sephora and USS Sulaco are joined an explosion which was felt around the two spacecraft injured members of the squad sent in first including Paluski, Tolentino, Tanaka, Romerio, Hernandez and O'Reilly. Before Winter enters the USS Sulaco to find members of O'Neal's Actual squad injured by the blast, Garnett hits the umbilical before disappearing into space, when he enters the USS Sulaco, Reid informs Cruz, Garnett has been lost.
Reference stats table.
Appearances in the following;
Aliens: Colonial Marines
Garnett's character only appears in the Aliens: Colonial Marines campaigns.
Garnett dies at the beginning of Winter's missions in the level Distress.
Although Winter thinks and says a cocooned Marine might be Garnett in the level Distress, Reid talks to Garnett just before Winter reaches the Sulaco and the explosion shakes both spacecrafts. When Keyes is being released he asks how is Garnett as he is cut from the cocoon.