I had a dream where i died...?

a nuclear missile launched from a helicopter at me and my brother (thats what we said in my dream,) It launched right at us and we ran away, my brother jamp across a fence and i tripped. The bomb landed in front of me and went off, but instead of an explosion sparkling words came out that said" gas", and they swirled together and exploded, right in front of me. right when it exploded I just switched perspectives to my brother, and i watched me or my body or whatever across the fence get vaporized by the bomb and then the explosion came towards my brother (me) and i then i just like switched to another dream that had nothing to do with what was going on, ( i was in my kitchen talking to my mom.) This was messed up, and the fear felt real, i freaked out when i woke up, so like what does this mean? dreams are symbolic i'm told, so what could all this weirdness mean!