JOINT BASE PEARL HARBOR-HICKAM (Oct. 4, 2021) A hospital corpsman from Navy Medicine Readiness and Training Command Pearl Harbor administers a flu vaccine at Bloch Arena at Joint Base Pearl Harbor-Hickam Oct. 4, 2021. Bloch Arena vaccination events will be held October 4-6, 12-13, and 25-27 from 7:30 am till 3:00 pm. Flu vaccines are mandatory for all active duty service members and the mass vaccination event at Bloch Arena will help facilitate larger commands. (U.S. Navy photo by Macy Hinds)