U.S. Air Force

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Delta IV rocket: (Image: U.S. Air Force)

U.S. Air Force Tech. Sgt. Brian West watches an Air Force F-35 Lightning II joist strike fighter aircraft approach for the first time July 14, 2011, at Eglin Air Force Base, Fla. (U.S. Air Force photo by Samuel King Jr.) ** FILE **

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Image: U.S. Air Force

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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. In taking a deep look at trouble inside U.S. nuclear forces, Defense Secretary Chuck Hagel is searching for the root causes of recent Air Force missteps but also for ways to make the nuclear warrior’s job more attractive when the military has turned its attention away from such weapons. (AP Photo/U.S. Air Force, Beau Wade)

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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. The Air Force says 34 nuclear missile launch officers at Malmstrom Air Force Base in Montana have been implicated in a cheating scandal and have been stripped of their certification. It is believed to be the largest such breach of integrity in the nuclear force.(AP Photo/U.S. Air Force, Beau Wade)

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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. The Air Force says 34 nuclear missile launch officers at Malmstrom Air Force Base in Montana have been implicated in a cheating scandal and have been stripped of their certification. It is believed to be the largest such breach of integrity in the nuclear force. (AP Photo/U.S. Air Force, Beau Wade)