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F-35 Lightning II aircraft assigned to Hill Air Force Base prepare for takeoff May 22. The F-35s are among the first to fly sorties at the base with a new version of ALIS (Autonomic Logistics Information System), the information technology infrastructure which performs behind-the-scenes monitoring, maintenance and prognostics to support the aircraft and ensure continued health and enhance operational planning and execution. (U.S. Air Force/Todd Cromar)
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