Two U.S. Air Force tactical air control party Airmen from the New Jersey Air National Guard's 227th Air Support Operations Squadron rappel from the top of the Anthony "Tony" Canale Training Center in Egg Harbor Township, N.J., Sept. 20, 2014. The Airmen took part in a tactical rapel training course which demonstrated the basics of rappelling, as well as more difficult maneuvers such as how to utilize a firearm while rappelling, and how to rappel inverted. (U.S. Air National Guard photo by Airman 1st Class Shane S. Karp/Released)
Staff Sgt. Sean Davis, left, salutes during the national anthem at a retirement ceremony for military working dog Fforde, Thursday, Sept. 25, 2014, at Dyess Air Force Base in Abilene, Texas. Fforde, who is capable of explosives detection, has been deployed to Pakistan, Iraq, UAE and Oman. Fforde will be retiring to the home of Staff Sgt. Davis. (AP Photo/The Abilene Reporter-News, Nellie Doneva) MANDATORY CREDIT
140920-N-ZI019-039 HAGATNA, Guam (Sept. 22, 2014) Sailors from Joint Region Marianas and Naval Mobile Constrcution Battalion (NMCB) 133 pick up trash and other debris along Agana Rivera during the 20th Annual International Coastal Cleanup. Military members and volunteers from the community pick up trash in support of the ecological health of the world’s ocean and sea life. (U.S. Navy photo by Leah Eclavea/Released)
Chief Warrant Officer Trevor Clough, center, asks Captain Sara So a question as she gives the soldiers their objectives before they take off in one of the two Black Hawk helicopters for the emergency management consequence training exercise during the mock disaster in Montague on Sept. 24, 2014. "One of the objectives were grid coordinates to shoot for so they know how far south and north I want them to go," said So. (AP Photo/The Muskegon Chronicle, Andraya Croft)
Centre for Diseases Control (CDC) epidemiologist Frank Mahoney (L) and US Major General Darryl Williams, commander of the US military's Operation United Assistance, hold a press conference about the Ebola virus at the US embassy in Monrovia on September 25, 2014. World leaders were asked to pledge urgently needed aid to battle Ebola in West Africa as Sierra Leone quarantined one million people in a desperate bid to beat back the deadly virus. US President Barack Obama warned that not enough was being done to tackle the crisis that has left close to 3,000 dead and is spreading at an alarming pace. AFP PHOTO / PASCAL GUYOTPASCAL GUYOT/AFP/Getty Images
TOPSHOTS This US Air Forces Central Command photo released by the Defense Video & Imagery Distribution System (DVIDS) shows a formation of US Navy F-18E Super Hornets in flight after receiving fuel from a KC-135 Stratotanker over northern Iraq, on September 23, 2014. These aircraft were part of a large coalition strike package that was the first to strike ISIL targets in Syria. AFP PHOTO / US Air Force / Staff Sgt. Shawn Nickel == RESTRICTED TO EDITORIAL USE / MANDATORY CREDIT: "AFP PHOTO / US Air Forces Central Command via DVIDS / Staff Sgt. Shawn Nickel" / NO SALES / NO MARKETING / NO ADVERTISING CAMPAIGNS / DISTRIBUTED AS A SERVICE TO CLIENTS ==Staff Sgt. Shawn Nickel/AFP/Getty Images
U.S. Air Force Maj. Gena Fedoruk and U.S. Air Force 1st Lt. Marcel Trott take off in a KC-135 Stratotanker from a base in the U.S. Central Command area of responsibility to support airstrikes in Syria, Sept. 23, 2014. Multiple KC-135 Stratotankers were part of a large coalition strike package that was the first to attack Islamic State of Iraq and the Levant targets in Syria. U.S. Air Force photo by Senior Airman Matthew Bruch
140922-N-ZA585-207 BREMERTON, Wash. (Sept. 22, 2014) Aviation Boatswain's Mate (Fuel) 2nd Class James Hiatt, from Kansas City, Mo., demonstrates the push up portion of a physical fitness assessment. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Patrick Enright/Released)
US President Barack Obama salutes alongside First Lady Michelle Obama as they walk from Marine One to Air Force One prior to departure from John F. Kennedy International Airport in New York, September 25, 2014. The Obamas traveled to New York for the United Nations General Assembly. AFP PHOTO / Saul LOEBSAUL LOEB/AFP/Getty Images
The aircraft carrier USS Carl Vinson (CVN 70) transits the Pacific Ocean during Valiant Shield 2014 Sept. 18, 2014. Valiant Shield is a biennial U.S. Air Force, Navy and Marine Corps exercise held in Guam, focusing on real-world proficiency in sustaining joint forces at sea, in the air, on land and in cyberspace. (DoD photo by Mass Communication Specialist 2nd Class John Philip Wagner Jr., U.S. Navy/Released)