Army Maj. Ryan Wolfe, a MEDEVAC commander with the 28th Expeditionary Combat Aviation Brigade, Pennsylvania National Guard, receives a COVID-19 vaccine at the Role 2 compound at AAAB, Iraq, Jan. 21, 2021. The COVID-19 vaccine is given in two doses and is more than 90 percent effective, according to the Centers for Disease Control and Prevention. The AAAB Soldiers will receive their second booster shot in approximately two weeks.

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