Warren Hill spent more than two decades working at the Lake Clark National Park and Preserve, which spans 4 million acres of coastline, forests, lakes and glaciers in Alaska. Last summer, he was promoted to serve as maintenance supervisor,

Several labor groups sued the Trump administration for allegedly firing tens of thousands of probationary employees illegally, as part of its drive to overhaul the federal government. In a complaint filed on Wednesday night in San Francisco federal court,

The Trump administration broadened its effort to terminate thousands of probationary workers on Thursday, instructing agencies on a call to move forward with the layoffs.