CARL RUSSO PHOTOS: A faulty sound system may have derailed some, standing on a stage in front of thousands of people hanging on your every word. But the 481 members of the Methuen High School class of 2021 -- whose character and mettle were forged by a worldwide pandemic that turned their lives upside down -- wouldn't let something as minor as a few technical glitches in the Nicholson Stadium public address system stop them. The commencement was held on June 4. 6/4/2021