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Use "lockdowns" in a sentence
"Staff members assembled the kits to use during long-term lockdowns like the four hours Patterson High School students spent in their classrooms last fall when fights broke out on campus."
"Usually in cases where there are what the Secret Service calls lockdowns or evacuations, they will stop people from walking down Pennsylvania Avenue in front of the White House."
"Eyewitness News was told the lockdowns were a precaution because of police activity nearby, but it's unclear why police were in the area."