I highly recommend a video on Facebook by a Time Magazine reporter, Amanda Ripley about how to train your brain to react to signs of an impending disaster faster and better.
It's on the Tooele (Too - Ella) County UT EMA wall/page. Roll down to the Sept. 20th posting a few items down their wall as presently constituted:
https://www.facebook.com/Tooelecountyemergencymanagement/Not only does she talk about how people react differently in disasters than they do in regular life (more stoic in survival conditions), but she also covers how even a little more knowledge
about what something means and how to speed up your brain processing that information can make the difference.