Disney world fear of mass shooting

I know you cannot live in fear but my biggest fear is going to Disney world and encountering me and my family in a mass shooting while there. I love Disney and I love everything about Disney world since I was a little girl and eventually I want to go when my children are bigger but all I think about is a mass shooting in crowded places like that because there are so many sick people with bad intentions. The world has changed and we all know that.

Does anyone know how security operates there?