There's a word, I think that starts with a 'p', that describes doing something to solve a situation before it happens. For example, if a hurricane is approaching a store might take __ action to prepare for the flood of people that might come. In a fictional world, an organization might take __ action against crime based on some foreknowledge of a person's future actions.
Edit
It's not "preparatory", "precautionary", or "preventative".