180419-N-YG104-0003 OKINAWA, Japan (April 19, 2018) Landing Craft Utility 1633, assigned to Naval Beach Unit 7, transits the harbor after offloading Marines during a certification exercise (CERTEX). CERTEX is the final evaluation in a series of training exercises which ensures readiness for crisis response throughout the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Sarah Villegas/Released)