Leading one of the fastest-growing cities in the country is no small task. It requires you to keep two fires burning – one for the concerns of today, and the other for the concerns of tomorrow. As the Mayor of Princeton, Brianna Chacon knows those concerns all too well. “Princeton is kind of a ‘unicorn city’ amongst Collin County,” Mayor Chacon said about the rapid growth her city has experienced in recent years, the amount of room it still has to grow, and its comparatively affordable homes.