Tech. Sgt. Mike Johnson (right), a crew chief from the Kentucky Air National Guard's 123rd Aircraft Maintenance Squadron, shows Staff Sgt. Brian Hinckley, a crew chief from the Connecticut Air National Guard's 103rd Aircraft Maintenance Squadron, different maintenance aspects of the C-130 Hercules aircraft at the Kentucky Air National Guard base in Louisville, Ky., on Nov. 14, 2013. The Connecticut unit is converting from C-21A Learjets to the Hercules transport. ( Air National Guard photo by Master Sgt. Phil Speck)

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