A landing craft air cushion (LCAC) approaches the multi-purpose amphibious assault ship USS Iwo Jima (LHD 7) during Unit Level Training Assessment Sustainment (ULTRA-S) certifications. Iwo Jima was en route to Ft. Lauderdale to participate in Fleet Week Port Everglades 2011. U.S. Navy photo by Mass Communication Specialist 2nd Class Zane Ecklund Newly-minted Coast Guard ensigns mount their new shoulder boards. President Barack Obama, Department of Homeland Security Secretary Janet Napolitano and Coast Guard Commandant Adm. Bob Papp participated in the Coast Guard Academy's 130th commencement exercise May 18, 2011, in New London, Conn. In all, 229 cadets received their diplomas and commissions as new ensigns in the Coast Guard. U.S. Coast Guard photo by Petty Officer 2nd Class Patrick Kelley U.S. Marine Corps Staff Sgt. Michael Saldana corrects a recruit during a senior drill instructor inspection on Marine Corps Recruit Depot San Diego, May 6, 2011. Saldana, assigned to the 1st Battalion, was nominated Drill Instructor of the Year for the entire Marine Corps. U.S. Marine Corps photo Cadets shake hands to congratulate each other on their graduation at a commencement ceremony at the United States Military Academy, West Point, N.Y., May 21, 2011. Department of Defense photo by Mass Communication Specialist 1st Class Chad J. McNeeley, U.S. Navy U.S. Army soldiers consolidate rounds and watch for enemy activity following a machine-gun and small arms attack on their position near the Pakistan border in Afghanistan, May 18, 2011. DOD photo by Karen Parrish Newly commissioned second lieutenants celebrate at the end of the Air Force Academy's Class of 2011 graduation ceremony May 25, 2011. Flying overhead are F-16 Fighting Falcons with the Thunderbirds U.S. Air Force Aerial Demonstration Squadron. Secretary of the Air Force Michael B. Donley was the guest speaker for the commencement. U.S. Air Force photo by Mike Kaplan Petty Officer 3rd Class Chris Moore, an aviation survival technician with Air Station Kodiak, tends a trail line connected to an acoustic mooring as Petty Officer 3rd Class Devin Lloyd, an aviation maintenance technician with Air Station Kodiak, hoists the mooring into an MH-60 Jayhawk helicopter for return to Kodiak Island April 28, 2011. U.S. Coast Guard photo by Chief Petty Officer Wayne Langley Newly commissioned Navy ensigns and Marine Corps 2nd lieutenants from the U.S. Naval Academy Class of 2011 celebrate their graduation with the traditional hat toss at Navy-Marine Corps Memorial Stadium. U.S. Navy photo by Mass Communication Specialist 2nd Class Kevin S. O'Brien Pilots aboard an MV-22B Osprey assigned to Marine Medium Tiltrotor Squadron (VMM) 263 (Reinforced), 22nd Marine Expeditionary Unit (22 MEU), prepare to land aboard the multipurpose amphibious assault ship USS Bataan (LHD 5). U.S. Navy photo by Mass Communication Specialist 2nd Class Julio Rivera Waves crash over the bow of the guided missile cruiser USS Princeton (CG 59) while she receives nearly 100,000 gallons of JP-5 jet fuel from the aircraft carrier USS Nimitz (CVN 68) during an underway replenishment (UNREP) in 2002. U.S. Navy photo by Airman Apprentice Mark Rebilas