The only locksmith at Yosemite National Park in California, the sole EMT ranger at neighboring Devils Postpile National Monument, an experienced sled dog musher in Alaska’s Denali National Park.

Thousands of Park Service and Forest Service employees have been fired, leaving few left to clean bathrooms, maintain trails ,or save lives.

Garbett was in the midst of preparations for another season when he got an email from the Forest Service saying all probationary employees—typically the recently hired or promoted—were on a list requested by the U.