Given the chance, Troupers in ground pursuit would anticipate the path of the moving spike, getting ahead of it and to the right, so as to silhouette the approaching spike against brighter air. The ideal was to set up a series of target grids of intense, networked instrumentation and have the spike wander through the grids. This was the standard research strategy for the clearest, full-capacity data collection, and the SESAME people with their computational heavy iron probably had much the same idea.