Secretary of Defense Ash Carter, left, meets with Saudi Prince Mohammad bin Salman, the deputy crown prince and minister of defense of Saudi Arabia, at the Four Seasons Hotel in Washington, D.C., Sept. 4, 2015, to discuss matters of mutual importance. (DoD photo by Senior Master Sgt. Adrian Cadiz, U.S. Air Force)

Chairman of the Joint Chiefs of Staff U.S. Army Gen. Martin E. Dempsey speaks during the 16th Annual Newman's Own Awards held in the Pentagon's Hall of Heroes in Arlington, Va., Sept. 2, 2015. During the ceremony, awards totaling $200,000 were presented to six military nonprofit organizations for their innovative programs to improve military quality of life. (DoD photo by Staff Sgt. Sean K. Harp, U.S. Army)

A U.S. Coast Guard 47-foot Motor Lifeboat crew with Coast Guard Air Station Atlantic City tows a disabled boat in the Absecon Inlet in New Jersey Sept. 2, 2015. (U.S. Coast Guard photo by Chief Petty Officer Nick Ameen)

The amphibious assault ship USS Boxer (LHD 4) participates in a simulated strait transit in the Pacific Ocean Sept. 2, 2015. The Boxer is currently underway off the coast of Southern California participating in Dawn Blitz 2015. Dawn Blitz is a multilateral amphibious exercise designed to strengthen the skills of the U.S. Navy and Marine Corps as well as several partner nations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Veronica Mammina)

U.S. Army Pfc. William Gillis, a mortarman assigned to Papa Troop, 4th Squadron, 2nd Cavalry Regiment, climbs aboard his assigned Stryker armored vehicle during a live-fire exercise Sept. 2, 2015, at the Wedrzyn Training Area in Poland as part of Operation Atlantic Resolve. The U.S. and partner nations conducted land, sea and air exercises and maintained a rotational presence in order to reinforce NATO security commitments in Europe. (U.S. Army photo by Capt. Spencer Garrison)

A U.S. Navy Mobile User Objective System communications satellite lifts off from Cape Canaveral, Fla., Sept. 2, 2015. The satellite provided mobile military forces with advanced global communications capabilities. (U.S. Navy photo)

Two U.S. Air Force F-16 Fighting Falcon aircraft and two F-35A Lightning II aircraft fly over Hill Air Force Base in Utah Sept. 2, 2015. (U.S. Air Force photo by Todd Cromar)

U.S. Secretary of Defense Ash Carter, left, hosts a first Worldwide Troop Talk at the Defense Media Activity at Fort George G. Meade, Md., Sept. 1, 2015. Carter answered questions from Service members from around the world. (DoD photo by Senior Master Sgt. Adrian Cadiz, U.S. Air Force)

U.S. Navy Operations Specialist 2nd Class Taiese Gaono tracks a course on the chart board aboard the amphibious transport dock ship USS New Orleans (LPD 18) during exercise Dawn Blitz 2015 in the Pacific Ocean Sept. 1, 2015. Dawn Blitz is a multilateral amphibious exercise designed to strengthen the skills of the U.S. Navy and Marine Corps as well as several partner nations. (U.S. Navy photo by Mass Communications Specialist 3rd Class Brandon Cyr)

Alaska Gov. Bill Walker, left, follows President Barack Obama as the two disembark Air Force One Aug. 31, 2015, at Joint Base Elmendorf-Richardson, Alaska. Obama was the keynote speaker at the Conference on Global Leadership in the Arctic: Cooperation, Innovation, Engagement and Resilience. The event was hosted by the U.S. Department of State and held in Anchorage, Alaska. (U.S. Air Force photo by Justin Connaher)

U.S. Marine Corps assault amphibious vehicles prepare to enter the well deck of the amphibious transport dock ship USS New Orleans (LPD 18) Aug. 31, 2015, in the Pacific Ocean during exercise Dawn Blitz 2015. Dawn Blitz is a multilateral amphibious exercise designed to strengthen the skills of the U.S. Navy and Marine Corps as well as several partner nations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Brandon Cyr)

U.S. Marines assigned to the 3rd Assault Amphibian Battalion observe the approach of assault amphibious vehicles toward the well deck of the amphibious transport dock ship USS Somerset (LPD 25) Aug. 31, 2015, off the coast of Marine Corps Base Camp Pendleton, Calif., during exercise Dawn Blitz 2015. Dawn Blitz is a multilateral amphibious exercise designed to strengthen the skills of the U.S. Navy and Marine Corps as well as several partner nations. (U.S. Navy photo by Mass Communication Specialist 1st Class Vladimir Ramos)

U.S. Soldiers assigned to a Stryker reconnaissance vehicle crew with Papa Troop, 4th Squadron, 2nd Cavalry Regiment drive through a section live-fire exercise during Operation Atlantic Resolve 2015 at the Wedrzyn Training Area in Poland Aug. 31, 2015. The U.S. and partner nations conducted land, sea and air exercises and maintained a rotational presence in order to reinforce NATO security commitments in Europe. (U.S. Army photo by Sgt. Brandon Anderson)

A German soldier provides security during a simulated noncombatant evacuation operation Aug. 30, 2015, at the Hohenfels Training Area in Germany as part of exercise Swift Response 15. Swift Response is a U.S.-led, multilateral field training exercise incorporating a multinational task force conducting simulated joint forcible entry operations and an airfield seizure. (U.S. Army photo by Sgt. 1st Class Caleb Barrieau)

A U.S. Air Force F-35A Lightning II aircraft piloted by Col. David Lyons, the commander of the 388th Fighter Wing, lands at Hill Air Force Base in Utah Sept. 2, 2015. The aircraft and another F-35A were the first of its type to be received at the base. (U.S. Air Force photo by Todd Cromar)

The amphibious transport dock ship USS New Orleans (LPD 18), the aviation logistics support container ship SS Curtiss (T-AVB 4), the amphibious transport dock ship USS Somerset (LPD 25) and the Mexican Navy patrol vessels ARM Usumacinta (A 412) and ARM Revolucion (P 164) participate in a simulated strait transit in the Pacific Ocean Sept. 2, 2015. (U.S. Navy photo by Mass Communication Specialist 3rd Class Veronica Mammina)

A U.S. Navy Mobile User Objective System communications satellite lifts off from Cape Canaveral, Fla., Sept. 2, 2015. The satellite provided mobile military forces with advanced global communications capabilities. (U.S. Navy photo)

A U.S. Air Force F-35A Lightning II aircraft piloted by Lt. Col. Yosef Morris, the director of operations with the 34th Fighter Squadron, prepares to land at Hill Air Force Base in Utah Sept. 2, 2015. The aircraft and another F-35A were the first of its type to be received at the base. (U.S. Air Force photo by Alex R. Lloyd)

The fast combat support ship USNS Arctic (T-AOE 8) participates in a nighttime underway replenishment with the amphibious assault ship USS Essex (LHD 2) Sept. 1, 2015, in the Gulf of Aden, as part of Combined Joint Task Force-Operation Inherent Resolve (CJTF-OIR). The Essex Amphibious Ready Group and the embarked 15th Marine Expeditionary Unit deployed in support of maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. CJTF-OIR is a multinational effort to weaken and destroy Islamic State in Iraq and the Levant operations in the Middle East region and around the world. (U.S. Navy photo by Mass Communication Specialist 2nd Class Huey D. Younger Jr.)

U.S. Marines and Thai sailors aboard landing craft, air cushion assigned to Navy Beach Unit 7 approach a beach during an amphibious assault conducted in support of Cooperation Afloat Readiness and Training (CARAT) 2015 Thailand in Sattahip, Thailand, Sept. 1, 2015. CARAT is a series of bilateral exercises held annually in Southeast Asia to strengthen relationships and enhance force readiness. (U.S. Navy photo by Mass Communication Specialist 1st Class Jay C. Pugh)