Peter Sellars, who is re-creating the 2005 opera for a run in Santa Fe, says he’s also reconsidering elements of it. “Here the story is, of course, the Los Alamos laboratory, … but also the ‘downwinders,’ the people living with all these cancers from all the test sites — and the pueblos that are 10 minutes away from Los Alamos, where most people and their families were employed.”