160617-N-ZT599-015 MONTEREY, Calif. (June 17, 2016) Graduates gather with their classmates outside Root Hall prior to the Naval Postgraduate School’s Spring Quarter Graduation ceremony, June 17. The NPS mission is to provide relevant and unique advanced education and research programs to increase the combat effectiveness of commissioned officers of the Naval Service to enhance the security of the United States. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael Ehrlich/Released)