I got word from my son’s kindergarten teacher that they’re having their first lockdown drill on Friday - I had asked her to let me know so I could talk to him about it in advance, because I read an article from a kindy parent who said that she realized her daughter didn’t really know what was happening, thought they were hiding from a bad man named Lockdown who wanted to hurt them, and was terrified. Except I’ve realized I don’t have any idea what to say. He’s four, so I really don’t want to get into “sometimes somebody might come into the school and want to hurt you”, but how do I explain this? It’s hard to even think about, the fact that I have to do it makes me sick to my stomach. Any advice?