FEMA camps

I'm a teenager and I keep hearing people talk about these camps. I keep hearing people say that it's going to be like ww2 and I've been hearing this FEMA stuff for years. My dad gives me deep detail and it seriously scares me. I have nightmares about this, and I just woke up from one a little bit ago. I'm worried and it's my greatest fear.. Has anyone else heard about this? I guess they're in a lot of states and it gives you the location, and shows where people will be buried. It shows the coffins they'll put the bodies in and how many they're making a day. It's on YouTube, on other online sites, I've heard people in person discussing it. I can't stop thinking about it