Before the hootin' and hollerin' can begin, Ski Patrol performs a number of avalanche-prevention duties. They start by checking "obliques" - webcams on the mountain that indicate where snow is blowing, weather conditions, and how strong the winds are. Next, they stop by each KAT starting spot and ski argyle patterns across the bowls to mix up and compress the different layers of snow. If avy danger is high, explosives are on hand to control the slope. When it comes to skiing ridges, patrol performs "Cornice Kicking" where they ski sideways along cornices to kick off any unsturdy snow and make the ridge safe to ski.