GULF OF ADEN (July 6, 2011) Airmen remove chocks and tie-down chains from a CH-46 Sea Knight helicopter assigned to the Evil Eyes of Marine Medium Helicopter Squdron (HMM) 163 during flight operations aboard the amphibious transport dock ship USS Green Bay (LPD 20). Green Bay and the embarked 13th Marine Expeditionary Unit (13th MEU) are underway supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Stephen M. Votaw)