Heat maps can be an excellent way to understand concentrations in given areas. The military could also use heat maps. Understanding where fighting is concentrated could alter the course of a mission or how resources are spent. Knowing that something is going on versus seeing where it is happening are two different ways of combating a problem. Heatmaps allow readers to understand more than surface-level activity and information on a map.
This is not a complete practicum until you do the Voronoi/Theissen analysis…