President Barack Obama, accompanied by Maj. Gen. Jeffrey S. Buchanan, left, Commander of the U.S. Army Military District of Washington, and the with the aid of Sgt. 1st Class John C. Wirth, lays a wreath at the Tomb of the Unknowns, on Memorial Day, Monday, May 25, 2015, at Arlington National Cemetery in Arlington, Va. (AP Photo/Pablo Martinez Monsivais)General John F. Campbell, commander of international forces in Afghanistan, left, salutes during a ceremony marking Memorial Day at the Resolute Support main headquarters in Kabul, Afghanistan, Monday, May 25, 2015. Over 2,300 American soldiers and more than 11,00 coalition soldiers have lost their lives in action during the last 14 years in Afghanistan. (AP Photo/Allauddin Khan) The United States Secretary of the Navy Ray Mabus throws out the first ceremonial pitch before the baseball game against the Philadelphia Phillies as part of Memorial Day ceremonies at Citi Field on Monday, May 25, 2015, in New York. (AP Photo/Kathy Kmonicek)U.S. Navy Sailors, assigned to Explosive Ordnance Disposal (EOD) Mobile Unit 5, and Republic of Singapore Navy (RSN) Sailors, assigned to RSN EOD Unit, board the USNS 2nd Lt. John P. Bobo to respond to a shipboard improvised explosive device threat during the Miata Exercise off the coast of Guam, May 19, 2015. The Miata Exercise is a bi-annual exercise conducted to enhance tactical level interaction between U.S. Navy and RSN EOD Forces strengthening strategic partnership, maintaining force readiness and increasing interoperability. (U.S. Navy photo by Mass Communication Specialist 1st Class Kori Melvin/Released)AQABA, Jordan (May 18, 2015) Military service members from Belgium, France, Jordan, Pakistan and the United States employ various ships and aircraft to conduct a simulated assault on a target during Eager Lion 2015. Eager Lion is a recurring multinational exercise designed to strengthen military-to-military relationships, increase interoperability between partner nations, and enhance regional security and stability. (U.S. Navy photo by Mass Communication Specialist 2nd Class Paul Coover/Released)A group of US marines prepare for an exercise in Sarajevo, Bosnia, on Thursday, May 21, 2015. Combined troops of both American US special marine forces FASTEUR (Fleet Anti-Terrorism Security Team Europe) and three different Bosnian security agencies with over 100 officers took part in 7 day long exercise with the aim to boost coordination and response capabilities in case of any security or terror threat in Bosnia. (AP Photo/Amel Emric)A U.S. Army paratrooper assigned to 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade rappels down a 30-foot tower during a training exercise May 18, 2015 at Caserma Ederle, Italy. The 173rd Airborne Brigade is the Army Contingency Response Force in Europe, capable of projective ready forces anywhere in the U.S. European, Africa or Central Commands areas of responsibility within 18 hours.(U.S. Army Photo by Visual Information Specialist Massimo Bovo/released)US and Georgian servicemen take part in the joint US-Georgia military exercise at the Vaziani base outside the Georgian capital, Tbilisi, Georgia, Thursday, May 21, 2015. About 600 U.S. and Georgian troops are conducting joint exercises aimed at training the armed forces of the former Soviet republic for participation in the NATO Response Force. (AP Photo/Shakh Aivazov)Naval and Coast Guard ships pass by the skyline of midtown Manhattan, including the Empire State Building, Wednesday, May 20, 2015, in New York. A parade of ships along the Hudson River kicks off Fleet Week in New York as part of the 27th annual celebration. (AP Photo/Seth Wenig)Soldiers from the 21st Theater Sustainment Command fire a salute cannon during a Memorial Day ceremony on Panzer Kaserne May 21. (Photo by Marisa Alia-Novobilski, 21st TSC Public Affairs)An F-16 Fighting Falcon sits in a hangar prior to departure at Holloman Air Force Base, N.M., May 13, 2015. F-16 students from the 311th Fighter Squadron, a tenant until from Luke Air Force Base, Ariz., are currently flying night operations as part of their syllabus. During the night operations, the students are becoming familiarized with night vision goggles while performing combat training missions. (U.S. Air Force photo by Airman 1st Class Emily A. Kenney/Released)Army Sgt. 1st Class Brian Scott visits the grave of his friend, Army Sgt. Michael Gonzalez, who was killed in Iraq in 2008, on Memorial Day at Arlington National Cemetery in Arlington, Va., Monday, May 25, 2015. Scott has visited Gonzalez's grave every year since 2008. (AP Photo/Andrew Harnik)
