U.S. Air Force

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Image: U.S. Air Force

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Airmen repeat the oath of enlistment at the Air Force Basic Training graduation ceremony, Lackland Air Force Base, Texas (U.S. Air Force, Staff Sgt Vernon Young Jr.)

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Airmen take the Oath of Enlistment during a reenlistment ceremony in December, 2013. (U.S. Air Force)

** FILE ** A U.S. Air Force A-10 Thunderbolt II with the 303rd Expeditionary Fighter Squadron, Bagram Airfield, Afghanistan, peels away and pops flares after receiving fuel from a KC-135 Stratotanker from the 340th Expeditionary Air Refueling Squadron out of Al Udeid Air Base, Qatar over Eastern Afghanistan, July 10, 2014. The A-10's maneuverability at slow speeds and low altitude has made it one of the most utilized aircraft for close air support throughout Operation Enduring Freedom. (U.S. Air Force photo by Senior Airman Matthew Bruch/Released)

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** FILE ** Lt. Col. James Hecker flies over Fort Monroe before delivering the first operational F-22A Raptor to its permanent home at Langley Air Force Base, Va., on May 12, 2005 (U.S. Air Force)

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This image provided by the U.S. Air Force shows a B-2 stealth bomber flying over the Pacific Ocean, before arriving at Andersen Air Force Base, Guam, in 2006. A B-2 stealth bomber crashed Saturday Feb. 23, 2008 at Anderson Air Force Base in Guam. The two pilots aboard the bomber ejected before the crash and are safe the U.S. Air Force said. A board of Air Force officers will investigate what happened. Each B-2 bomber costs about $1.2 billion to build. All 21 stealth bombers are based at Whiteman Air Force Base in Missouri, but the Air Force has been rotating several of them through Guam since 2004, along with B-1 and B-52 bombers. (AP Photo/U.S. Air Force photo, Staff Sgt. Bennie J. Davis III)

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In this image released by the U.S. Air Force, a Malmstrom Air Force Base missile maintenance team removes the upper section of an ICBM at a Montana missile site. An Air Force security team's botched response to a simulated assault on a nuclear missile silo has prompted a blistering review followed by expanded training to deal with the nightmare scenario of a real attack. But an internal review of the exercise held last summer at Malmstrom Air Force Base in Montana said the security forces were unable to speedily regain control of the captured silo, and called this a "critical deficiency." The Associated Press obtained a copy of the report through a Freedom of Information Act request. (AP Photo/U.S. Air Force, John Parie)

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This image provided by the U.S. Air Force shows Air Force Chief of Staff Gen. Mark Welsh, right, and Tech. Sgt. Justin Richie, a 341st Maintenance Operations Squadron team trainer, riding in a work cage on Nov. 20, 2012, inside the T-9 maintenance trainer at Malmstrom Air Force Base, Mont. Armed security forces at a nuclear missile base failed a drill in the summer of 2013 that simulated the hostile takeover of a missile launch silo because they were unable to speedily regain control of the captured nuclear weapon, according to an internal Air Force review obtained by The Associated Press. (AP Photo/U.S. Air Force, Beau Wade)