Marines assigned to the 31st Marine Expeditionary Unit (31st MEU) prepare for a simulated air raid aboard the forward-deployed a

100919-N-9950J-187
PHILIPPINE SEA (Sept. 19, 2010) Marines assigned to the 31st Marine Expeditionary Unit (31st MEU) prepare for a simulated air raid aboard the forward-deployed amphibious assault ship USS Essex (LHD 2). Essex is part of the forward-deployed Essex Amphibious Ready Group and is participating in Valiant Shield 2010, a joint-service exercise designed to enhance interoperability between U.S. forces. (U.S. Navy photo by Mass Communication Specialist 2nd Class Greg Johnson/Released)

100919-N-9950J-187
 PHILIPPINE SEA (Sept. 19, 2010) Marines assigned to the 31st Marine Expeditionary Unit (31st MEU) prepare for a simulated air raid aboard the forward-deployed amphibious assault ship USS Essex (LHD 2). Essex is part of the forward-deployed Essex Amphibious Ready Group and is participating in Valiant Shield 2010, a joint-service exercise designed to enhance interoperability between U.S. forces. (U.S. Navy photo by Mass Communication Specialist 2nd Class Greg Johnson/Released)