Ten million Americans live in hurricane danger zones, but how do we know if or when to evacuate? We must predict both when a storm will strike and how strong it will be. A daring NASA earth science mission may have finally found a way to crack this hurricane code. Dr. Scott Braun is the principal investigator for the Hurricane and Severe Storm Sentinel mission (HS3), which flies repurposed military drone over hurricanes so that scientists can gather data. But the stakes are high and time is running out. In the first Scientists in the Field book entirely about weather, meet the NASA team on the cutting edge of meteorological field science.