Fire Base Phoenix is a U.S. military base in Afghanistan where 1st Battalion, 75th Ranger Regiment and the Afghan National Army are stationed. It appears in the mission "S.S.D.D.". Here, PFC. Allen assists Sgt. Foley in demonstrating to the local soldiers how to properly use their weapons and later runs the Pit on orders from General Shepherd, who is trying to pull someone for a "Special Assignment", which is later known to be Allen's last mission.