Career arcs have a beginning, an apogee, and an eventual end. So far, US Biathlon’s Sean Doherty has been on an ascendant path. He’s the most decorated career IBU Youth/Junior Worlds medalist with 10 total. With two Olympics to his name, and a 25th overall ranking on the World Cup last season, year by year Doherty’s training has yielded race improvements. Why shake it up? At 24-years-old, and two full winters before the 2022 Olympics,...