Col. Bruce Vargo, the joint detention group commander

Col. Bruce Vargo, the joint detention group commander at Guantanamo Bay, gives a tour of a detainee holding cell to Adm. Mike Mullen, chairman of the Joint Chiefs of Staff. During his stop, Mullen held an all-hands call with service members stationed on the island, visited detention facilities and the new expeditionary legal complex that will be used to try high value combatants detained in the Global War on Terrorism. Mullen is on a five-day trip to the U.S. Southern Command area of responsibility. (U.S. Navy Photo/mass communication specialist Petty Officer 1st Class Chad J. McNeeley)