Hospital Corpsman 2nd Class Glenda Miller administers a vaccination aboard the USS Gridley in the Pacific Ocean, March 26, 2026. Corpsmen like Miller are part of the inspiration behind Primary Care Medics in Pennsylvania. (U.S. Navy photo by Mass Communication Specialist 2nd Class Timothy Meyer)On the battlefield, military doctors don’t accompany their units to the frontlines. Someone with a specialized certification isn’t the one patching wound…