It's 7 am and I'm listening to the distant thunder roll in through my window.  Spring in Mississippi is filled with rain and stormy weather.  You lose count of Tornado watches and the public safety siren that's supposed to alert you to take precautions when tornadoes are imminent goes off so often that people simply ignore it.
It's interesting to think about locations around the world that have a constantly recurring danger that is ignored by most people because they simply don't take it seriously anymore.
In South Korea, the first time you hear about some threat from the north, you panic.  After 6 months and living through many more such threats, you shrug or maybe even laugh.  The easiest way to tell if somebody is new to the country is by how concerned they become at a recent threat.
In Mississippi it is Tornadoes.  They strike suddenly and without warning and the results can be catastrophic but you cannot live in fear and so each passing storm usually causes no more than mild concern with the locals.  I am an exception.  I've been living away for so long that I have to become used to what I grew up with again.  
In California it is earthquakes.  We have been told for years that a massive earthquake is coming but people continue to build and live through the many smaller tremors without much concern.
In all of these areas we know that danger is lurking and probably will eventually strike, but people choose to live with it in relative peace.
What is a constant danger where you live?  Do you think about it or are you like so many of us around the world?