A strike by the ski patrol at Park City Resort, North America’s largest ski area by acreage, has shut a majority of the Utah resort for more than a week at its busiest time of the year.

“Saddleback Patrol, dispatch.” The radio crackles to life in the patrol shack. “Go ahead ... Grabbing the sled, I ski down the run, scanning for signs of distress. I see it: crossed skis.