Staff Sgt. Joseph Humphrey, 386 Expeditionary Maintenance Squadron, Aircraft Maintenance Unit crew chief loads wheel chocks to onto a C-130H Hercules prior to it taking off, Oct. 11, 2017. The 386 EMS, Blue AMU, achieved a three year high mission-capable rate of 95.8 percent during the month of September. (Air Force photo by Staff Sgt. William Banton)