A U.S. Air Force F15 fighter jet takes off from Kadena Air Base in Okinawa, southwestern Japan, Thursday, Jan. 7, 2016. North Korea's declaration that it had tested a hydrogen bomb for the first time was greeted with widespread condemnation - but also skepticism - as world powers vowed Wednesday to punish the impoverished and defiant nation with new international sanctions. (AP Photo/Koji Ueda)Navy Secretary Ray Mabus, left, talks with Rep. John Lewis, D-Ga., during a ceremony on Capitol Hill in Washington, Wednesday, Jan. 6, 2016, to announce that the next generation of fleet replenishment oilers will be named the USNS John Lewis, after the civil rights movement leader and Georgia's 5th District representative, during a ceremony . (AP Photo/Jacquelyn Martin)This image provided by the Turkish Military shows the Chairman of the U.S. Joint Chiefs of Staff, Gen. Joseph Dunford, second left, and Turkey's Chief of Staff Gen. Hulusi Akar inspect a military honour guard in Ankara, Turkey, Wednesday, Jan. 6, 2016. Dunford is visiting Turkey, an ally in the US-led war against Islamic State group as regional tensions rise. The war against Islamic State is expected to top the agenda during Dunford's visit.(Turkish Military via AP)Recruits of India Company, 3rd Recruit Training Battalion, conduct pull-ups during a physical training event at Marine Corps Recruit Depot San Diego, Dec. 28. During the event, drill instructors motivated each recruit to try their best while conducting each set of exercises. Annually, more than 17,000 males recruited from the Western Recruiting Region are trained at MCRD San Diego. (U.S. Marine Corps photo by Lance Cpl. Angelica I. AnnastasA U.S. Air Force B-1B Lancer from the 34th Expeditionary Bomb Squadron flies over Iraq in support of Operation Inherent Resolve, Jan. 6, 2016. OIR is the coalition intervention against the Islamic State of Iraq and the Levant. (U.S. Air Force photo by Staff Sgt. Corey Hook/Released)160102-N-DZ642-061 ARABIAN GULF (Jan. 2, 2016) Sailors transit toward a simulated fire during a general quarters drill in the hangar bay of aircraft carrier USS Harry S. Truman (CVN 75). GQ drills prepare Sailors to be at the highest state of readiness in the event of an emergency. Harry S. Truman Carrier Strike Group is deployed in support of Operation Inherent Resolve, maritime security operations, and theater security cooperation efforts in the U.S. 5th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class B. Siens/Released)Marine Corps Air Station Camp Pendleton Marines conduct a conditioning hike as part of 'back in the saddle' training, Jan. 5. The bi-annual training consists of various classes and briefs from air station personnel and concluded with a 6-mile hike aboard Camp Pendleton. (U.S. Marine Corps photo by Pfc. Emmanuel Necoechea/ Released)Army Gen. Frank J. Grass (center), chief of the National Guard Bureau, tours flood-damaged areas in Pacific, Mo., Jan. 5, 2016. Soldiers and Airmen with the Missouri National Guard volunteered to support the Missouri Department of Transportation in flood relief efforts in south central Missouri. The focus of the aid is to ensure traffic control, water purification and levee reinforcement in affected areas. (Missouri Air National Guard photo by Senior Airman Patrick P. Evenson/Released)The crew of the Coast Guard Cutter Razorbill rescued two people from the Katlynn Necole, a tug boat that had capsized two miles east of Baptiste Collette, La., Jan. 5, 2016. The two men were transported to Venice with no reported injuries. (U.S. Coast Guard photo)Staff Sgt. Ryann Sartor, Soldier Mentor and a United States Special Operations Command Soldier, plays foosball with girls from the Boys and Girls Club, Calderon Branch in San Antonio. Players in the U.S Army All-American Bowl are paired with Army Soldiers Mentors who are outstanding Soldiers who have earned distinctions in their commands. Player-Soldiers Mentor pairs interact throughout Bowl Week in a variety of activities. (U.S. Army Photo by Sgt. Bethany L. Huff)