You run a pan-US drone delivery service for a popular online retailer. You're given a list of zip codes across the US at which you need to drop off parcels, and want to optimize its journey so it travels the shortest distance.

This application extracts the latitude and longitude of those zip codes from an SQLite database (the database is included with the application, and cross-references US zip codes against their latitude, longitude, city and state). It then performs a traveling salesman optimization and plots the shortest path on a map of the US.