U.S. military personnel assigned to units throughout

U.S. military personnel assigned to units throughout Marine Corps Installations Pacific (MCIPAC), Camp Smedley D. Butler participate in exercise Constant Vigilance, Camp Foster, Okinawa, Japan, Oct. 11, 2018. Constant Vigilance is an annual exercise designed to ensure that MCIPAC facilities and personnel are properly equipped and trained to handle a variety of scenarios, including emergency, medical, security, and terrorist responses. (U.S. Marine Corps photo by Lance Cpl. Brennan Priest)