California Air National Guard Capt. Christopher Lacroix, left, performs preflight checks in an F-15C Eagle. He is assisted by Staff Sgt. Michael Pruitt during exercise Sentry Aloha 17-03 at Joint Base Pearl Harbor-Hickam, Hawaii, March 30, 2017. Lacroix is a pilot assigned to the California Air National Guard’s 194th Fighter Squadron. Pruitt is a crew chief assigned to the California Air National Guard’s 44th Aircraft Maintenance Squadron. Sentry Aloha is an Air Guard-led exercise that provides a current, realistic, and integrated training environment to the U.S. Air Force and joint partners. Air National Guard photo by Senior Master Sgt. Chris Drudge