Spanish military officials and U.S. embassy visitors observe a demonstration by Marines of the 24th Marine Expeditionary Unit on the flight deck of the Whidbey Island-class amphibious dock landing ship USS Fort McHenry (LSD 43) Dec. 31, 2014. Fort McHenry, part of the Iwo Jima Amphibious Ready Group/24th Marine Expeditionary Unit, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Adam Austin/Released)