Drill sparks active-shooter panic, lockdown at Walter Reed National Military Medical Center

iStock/Thinkstock(WASHINGTON) — A drill sparked active-shooter panic and prompted a lockdown at Walter Reed National Military Medical Center in Bethesda, Maryland, Tuesday afternoon, multiple sources told ABC News. Military police tweeted an alert about 2:15 p.m. of a possible active shooter and were searching through buildings, and calling in the Montgomery County Police to help. …

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