Tech. Sgt. Kevin Yamaguchi, a crew chief with the 149th Fighter Wing, Texas Air National Guard, headquartered at Joint Base San Antonio-Lackland, Texas, marshals an F-16 Fighting Falcon at Joint Base Pearl Harbor Hickam, Hawaii, Aug. 18, 2016. Yamaguchi participated in Sentry Aloha 2016, a large-scale fighter exercise hosted by the Hawaii Air National Guard (U.S. Air National Guard photo by Tech. Sgt. Rebekkah Jandron)