I’m intrigued, particularly by the layers of security here: bus, metal windows, walls, dome. There’s obviously security redundancy. Small suggestion: For some reason, “hull” doesn’t seem quite the right word to me. Maybe just “side”?

Yeah I kind of feel that way about pilots..
Unique scene you’ve painted for us, and I think the security redundancy is warranted, if the projectile cloud grows in strength, you want to be protected.
I have some strange idea that he is escaping from a tyrannical taz-like mother-in-law who wants him to be someone he’s not. She is hurling the projectiles and created the cloud of depression over the domed city where he feels safe, for now. Am i crazy? no, just creative. :)