NBC Nightly News Broadcast (Full) – March 25th, 2021 | NBC Nightly News

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Deadly tornado outbreak tears across South, President Biden announces new Covid vaccine goal at first press conference, and Covid cases rising across U.S.

Watch “NBC Nightly News With Lester Holt” at 6:30 p.m. ET / 5:30 p.m. CT (or check…