If you want to know about how biathlon travels from the trails onto television, the first thing you need to know about is cable. In Fort Kent, the site of Maine’s second biathlon World Cup in as many weeks, the stuff is everywhere. It’s mostly black, but also orange, blue, white, red, green, and yellow. It snakes along the sides of the trails, hangs neatly coiled from racks, and explodes into massive, spaghetti-like snarls when...