WASHINGTON (Dec. 15, 2020) Medical workers who received Pfizer’s COVID-19 vaccine at Washington D.C. Veterans Affairs Medical Center were also given a sticker commemorating the event. The vaccine was delivered as part of Operation Warp Speed, a whole-of-America effort to rapidly develop, manufacture and distribute safe and effective COVID-19 vaccines to the American people. (DoD photo by Chief Mass Communication Specialist Charles Hayes)