U.S. Air Force Staff Sgt. Michael Ekstrom, 144th Aircraft Maintenance Squadron, California Air National Guard, prepares to marshal out an F-15C Eagle during Sentry Aloha 17-03 March 30, 2017. 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)