Soldiers of the U.S. Army 23rd chemical battalion climb the wall during a competition at Camp Stanley in Uijeongbu, South Korea, Wednesday, July 8, 2015. About 250 soldiers attended this competition to test individual soldier skills consisting of medical tasks, weapons assembly and disassembly, plus other events, in a physically and mentally challenging environment. (AP Photo/Ahn Young-joon)Sen. John McCain (R-AZ) jokes with retired 2nd Lt. John R. Pedevillano that they both have more take-offs than landings after he and Gen. Larry O. Spencer presented him with the Presidential Unit Citation with Oak Leaf Cluster during a ceremony in the Russell Senate Office Building Washington, D.C., on Tuesday, July 7, 2015. Pedevillano, 93, who served with the 306th Bomb Group, was captured after his B-17 "Miss Carriage" was shot down over Germany in 1944.ROCKHAMPTON, AUSTRALIA - JULY 08: A U.S Paratrooper walks from the drop zone as other members from the 4/25th Infantry Division land near him after making a jump from a C-17 Globemaster as part of exercise Talisman Sabre on July 8, 2015 in Rockhampton, Australia. Talisman Sabre is a biennial military exercise that trains Australian and U.S. forces to plan and conduct combined task force operations to improve combat readiness and interoperability on a variety of missions from conventional conflict to peacekeeping and humanitarian assistance efforts. TS15 will incorporate force preparation activities, Special Forces activities, amphibious landings, parachuting, land force manoeuvre, urban operations, air operations, maritime operations and the coordinated firing of live ammunition and explosive ordnance from small arms, artillery, naval vessels and aircraft. (Photo by Ian Hitchcock/Getty Images)Secretary of Defense Ashton Carter and Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey testify before the Senate Armed Services Committee about the strategy against ISIL in Washington, D.C., on Tuesday, July 7, 2015.U.S. Marine Sgt. Sean Bernstein, middle, teaches nomenclature and handling techniques for the M45 1911 A1 pistol during a female engagement team class aboard the amphibious assault ship USS Essex (LHD 2). Bernstein is a Member of the 15th Marine Expeditionary Unit’s Maritime Raid Force. The Marines are participating in a week-long screener to assess their knowledge of skills such as marksmanship, detainee handling, patrolling, and teaching skills. The 15th MEU is embarked on the Essex Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. (U.S. Marine Corps photo by Cpl. Elize McKelvey/ Released)INDIAN OCEAN (July 8, 2015) – Landing Craft Air Cushion (LCAC) 9, assigned to the Naval Beach Unit (NBU) 7, departs the well deck of the forward-deployed amphibious assault ship USS Bonhomme Richard (LHD 6). Bonhomme Richard is the lead ship of the Bonhomme Richard Expeditionary Strike Group and is on patrol in the U.S. 7th Fleet area of operations. (U.S Navy photo by Mass Communication Specialist 2nd Class Naomi VanDuser/ Released)U.S. Army Chief of Staff Gen. Raymond Odierno, right, greets soldiers of the U.S. Army 173rd Airborne Brigade during the combined Lithuanian-U.S. training exercise at the Gaiziunai Training Area some 110 kms (69 miles) west of the capital Vilnius Lithuania, Tuesday, July 7, 2015. (AP Photo/Mindaugas Kulbis)Marines with Marine Wing Support Squadron 274 negotiate obstacles during their inaugural Ironman Challenge at Marine Corps Air Station Cherry Point, N.C., on July 2, 2015. The Inaugural Ironman Challenge was comprised of a one-mile sandbag carry and wall and log negotiation. The event tested Marines’ mental and physical endurance while building camaraderie within the squadron.Chief Master Sgt. of the Air Force James A. Cody speaks with F-16 Fighting Falcon pilots from the 35th Fighter Squadron during a tour at Kunsan Air Base, Republic of Korea, July 2, 2015. Cody engaged with Wolf Pack Airmen to answer questions and give insight on key Air Force topics and changes. (U.S. Air Force photo by Staff Sgt. Nick Wilson/Released)150604-N-OG138-178
BOSTON (July 4, 2015) Sailors assigned to USS Constitution present colors at the Boston Massacre Memorial during Boston's annual Fourth of July parade. This year marks the 239th anniversary of the signing of the Declaration of Independence. (U.S. Navy photo by Mass Communication Specialist Seaman Matthew R. Fairchild/Released)
