Syringe Prep Army Pvt. Joe Díaz, assigned to the Puerto Rico Army National Guard, prepares a COVID-19 vaccine in Barceloneta, Puerto Rico, March 9, 2021. The Puerto Rico National Guard was tasked with the vaccination of the elderly population to protect them against COVID-19. SHARE IMAGE: Download Image: Full Size (1.76 MB) Tags: national guard, army, health, coronavirus, covid19vaccine Photo By: Army Spc. Hassani Ribera, Puerto Rico Army National Guard VIRIN: 210309-Z-KB014-1017.JPG Photo Gallery