California Air National Guard Tech. Sgt. Melissa Hernandez, right, supervises end-of-runway checks on an F-15C Eagle during exercise Sentry Aloha 17-03 at Joint Base Pearl Harbor-Hickam, Hawaii, March 30, 2017. Hernandez is a crew chief assigned to the California Air National Guard’s 44th Aircraft Maintenance Squadron. Air National Guard photo by Senior Master Sgt. Chris Drudge