MapAction is a resource for humanitarian aid workers. Mapping during crises in order to get needed supplies in the right places is one of the missions of MapAction. Here is what they say:
"MapAction delivers information that saves lives and livelihoods. When disasters strike, coordinating relief efforts hinges on rapid transfer of information. MapAction delivers that vital situation information in the form of maps, created and distributed in the field. By conveying a "common operational picture", our maps make a crucial difference in delivering humanitarian aid to the right place to relieve suffering."