If it's credible it usually will cite where it got it's information to avoid copyright bs
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!
Answer:
Create a long of what you eat each day
critique ones diet for overall balance of key nutrients
identify personal barriers