The only thing that helps is Torah and Mitzvos. When bad things happen, the Torah says that we are supposed to see what we need to work on in terms of Ruchnius.
(yes, we also need hishtadlus, but it’s not the ikar. And in this case, it’s only for the firefighters & army).
Additionally, according to the Alshich, in E”Y, hishtadlus IS Torah & Mitzvos.