U.S. Air Force Capt. Christopher Lacroix, 194th Fighter Squadron pilot, California Air National Guard, performs pre-flight checks in an F-15C Eagle assisted by his crew chief, Staff Sgt. Michael Pruitt, March 30, 2017 during Sentry Aloha 17-03. 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)