U.S. Marines perform maintenance on two CH-53E Sea Stallion helicopters. U.S. Marines assigned to Marine Medium Tiltrotor Squadron 261 with the 24th Marine Expeditionary Unit perform maintenance on two CH-53E Sea Stallion helicopters aboard the amphibious assault ship USS Iwo Jima (LHD 7) while in the Atlantic Ocean on April 4, 2012. The Iwo Jima is deployed as part of the Iwo Jima Amphibious Ready Group with the 24th Marine Expeditionary Unit in support of maritime security operations and theater security cooperation efforts in the U.S. 5th and 6th Fleet areas of responsibility. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 591975-D-XIS90-157.jpg Photo Gallery