In the last few years, according to the united nations office for disaster risk reduction (UNSIDR), the natural and artificial disasters cost the world a lot of money and killed people whether during disaster time or after it in the search and rescue missions. Moreover, in 2016 the number of disasters reached 327 disasters, of which 191 were natural disasters and 136 man-made disasters. Natural disaster include storms, hurricanes, earthquakes and floods. While the man-made disasters include fires and explosions, maritime, aviation and rail disasters, and terrorism.
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