Photo by Lance Cpl. Lennon Dregoiw - U.S. Navy Sailor HR Ashley Alcantara, a Corpsman with the Naval Family Branch Health Clinic (BHC), administers the influenza vaccine to HN David Ford, an optometry technician, during Exercise Active Shield aboard Marine Corps Air Station (MCAS) Iwakuni, Japan, Oct. 27, 2020. The BHC conducted a 72-hour mass immunization event to vaccinate all active-duty service members at the air station. Active Shield is an annual bilateral exercise partnering U.S. and Japanese forces for the protection and defense of MCAS Iwakuni and other assets in the region in order to sustain military operations in support of the U.S.-Japan Alliance. (U.S. Marine Corps photo by Lance Cpl. Lennon Dregoiw)