Of the 14 cases, one patient, who tested positive for COVID-19 three months ago, developed myocarditis after their first dose of vaccine. The remaining 13 patients developed myocarditis after their second vaccine doses. Eleven received the Moderna vaccine; three got Pfizer. Military.com reporter Steve Beynon, 30, a member of the Washington, D.C., National Guard, is among the 14 military patients who developed myocarditis after his second dose of the Moderna vaccine. He was hospitalized at Walter Reed National Military Medical Center in February and spent nearly three days in the ICU, but returned to work and has since performed his...