Michael Yochim watches bighorn sheep on the crest of Yellowstone's Specimen Ridge in 2004. Less than a decade later,  he received  the diagnoses that he had ALS, also known as Lou Gehrig's Disease. Photo courtesy of the author
Michael Yochim watches bighorn sheep on the crest of Yellowstone's Specimen Ridge in 2004. Less than a decade later, he received the diagnoses that he had ALS, also known as Lou Gehrig's Disease. Photo courtesy of the author