The University of Missouri drone journalism program knew how to fly drones and take aerial imagery. But they were not adept at geospatially registering the images they took. This required the development of ground control markers for the flights at the Weldon Springs German Heritage area. GeoVelo developed a set of do-it-yourself ground control markers and published a blog article on the topic after they were such a success. Years later I still get comments about how well designed enterable these ground control markers are. Blog Article – CD