“If we didn’t take any action we would have been negligent,” Chief Sluckis said.
This statement is 100% true. Had someone been shot, after bullets were found, everyone would be screaming that the officials didn't search the school.
Given the school shootings lately, I would expect officials to search the school in this situation. I don't think this qualifies as hysteria. They put the school in lockdown, and searched it. To me it seems a reasonable approach.
See post 29.