Ninety-nine cadets from 40 counties will graduate from the Wisconsin National Guard Challenge Academy Saturday in a noon ceremony at the Mauston High School gymnasium.  The graduates include 1 cadet from Adams County, 3 from Juneau County, and 2 cadets from Monroe County.  The Challenge Academy uses a structured, military-style environment to re-shape the lives of at-risk 16 to 18-year olds.