If there were a fire, explosion, or bomb threats in schools, for example, are required to evacuate but if it's a sniper or shooter then they do a lockdown. Because if the shooter is on the outside and they decide to evacuate then they could get shoot so most schools and places do lockdowns.
So the answer would be a sniper. I hope this helps!
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Answer:
The speed at which your heart beats at a rested time, not moving at all, just calm.
Explanation:
I Hope this helps. Im trying to level up so I'd appreiciate it if you marked me as brainliest. Thank you!