The story is broken up into chapters, which each have their own central objective; Each chapter has parts, and each part is from a different person's perspective.
Despite being from people's perspective, it's written in third-person past tense; In my mind, I imagine this as you seeing things as they unfold but notating it in past tense because it's already happened as you're thinking it, but I also imagine you "seeing" it from their perspective- knowing their thoughts- without being them.