Fighter pilots have a concept known as an OODA loop that helped the US develop the top Air Force in the world. Basically, they figured out that pilot in a dogfight all went through the same mental process:
Furthermore, they found out that in a dogfight the pilot who went through the 4 steps the fastest won the majority of engagements. How’s this applied to surviving a disaster in an urban environment? Well, the faster you can go through the process of observing, orienting, deciding, and acting in a survival situation, the more likely you will be to survive. "Chance favors the prepared mind".