Rear Admiral Bill Gortney (R), the new commander of the Bahrain-based US Navy's Fifth Fleet, speaks to the press standing next to his predecessor Vice Admiral Kevin Cosgriff (L) following a handover of command ceremony at US Naval headquarters in Manama on July 5, 2008. Gortney took command of the Fifth Fleet today as Iran's army chief warned that the Islamic republic would shut the Strait of Hormuz which controls Gulf oil exports if its interests were threatened, only a few days after the outgoing commander Cosgriff vowed that the US would not allow this to happen. AFP PHOTO/ADAM JAN