170919-N-LV331-003 QUANTICO, Va. (Sept. 19, 2017) Secretary of the Navy (SECNAV) Richard V. Spencer tests augmented reality glasses as part of a technology exposition during the 2017 Marine Corps General Officer Symposium. Spencer attended the symposium to meet and hear from U.S. Marine Corps (USMC) leaders about the future of the USMC. (U.S. Navy photo by Mass Communication Specialist 1st Class Armando Gonzales/Released)