U.S. Air Force Maj. Matt Allen, 422nd Test and Evaluation Squadron pilot, climbs into the cockpit of a F-22 Raptor Sept. 21, 2011, at Nellis Air Force Base Nev., for his first flight since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
U.S. Air Force Crew Chiefs from the 57th Aircraft Maintenance Squadron goes over pre-flight procedures before launching a F-22 Raptor Sept. 21, 2011, at Nellis Air Force Base Nev., for its first flight since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
U.S. Air Force Maj. Matt Allen, 422nd Test and Evaluation Squadron pilot, goes over a pre-flight checklist in the cockpit of a F-22 Raptor Sept. 21, 2011, at Nellis Air Force Base Nev. Allen is flying his first flight since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
U.S. Air Force Staff Sgt. Ian-Wayne Thorton, 57th Aircraft Maintenance Squadron crew chief, goes over pre-flight check before launching a F-22 Raptor Sept. 21, 2011, at Nellis Air Force Base Nev., for its first flight since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
A U.S. Air Force F-22 Raptor taxis toward the runway Sept. 21, 2011, at Nellis Air Force Base Nev., for its first flight since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
A U.S. Air Force F-22 Raptor takes off Sept. 21, 2011, at Nellis Air Force Base Nev. The flight was the first since an Air Combat Command directed stand-down of the entire F-22 fleet May 3, 2011. The Raptors were grounded as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. Officials remain focused on the priorities of aircrew safety and combat readiness. The return-to-fly plan implements several risk-mitigation actions, to include rigorous inspections, training on life-support systems and continued data collection. (U.S. Air Force photo by Tech. Sgt. Michael R. Holzworth/Released)
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