Jonathan B. Jarvis served for 40 years in the National Parks Service. He worked under presidents of both parties as a ranger, biologist, superintendent, and regional director, and ultimately became the agency's director from 2009–2017.

Jarvis's brother, Destry, has worked with the past 12 NPS directors in various capacities as a conservation advocate. These men know the beauty and wonder of our National Parks well, and their chilling warning about what's happening to these public lands is a must read for all Americans.