Private Colliatie was a Marine that joined the player during a rescue mission in Call of Duty 4: Modern Warfare (Nintendo DS). Colliatie accompanied the player through the opening moments of the mission "Hard Impact", where the Marine Evac Team must rescue Hawk One, a helicopter shot down by Al-Asad's militia in the Middle East. Colliatie helped fight past a militia machine gun emplacement. Upon rounding a corner, he alerted the player of an entrance to the emplacement, and told the player to "Take out the emplacement to your left." After the player dispatched the gunner and returned to Colliatie, he was shot and killed by one of the militia soldiers sniping from a balcony.