B13aWGBH1309 Published May 20, 2013 at 600 × 400 in Roth retires after 45 years, Leonard takes helm at NET, and more . . . The 2013 Class of WGBH’s Producers Workshop, a weeklong training program, attracts station-based producers from across the country. Veteran production exec Judith Vecchione, at center holding sign, has organized the annual boot camps since 2001.