How real is 'Oppenheimer'? A nuclear-weapons expert rates the movie.

Nuclear-weapons physicist Greg Spriggs rates "Oppenheimer" for realism. He explains how accurate Christopher Nolan's recreation of the construction of the first atomic bomb in Los Alamos and the subsequent Trinity test was in the movie, starring Cillian Murphy, Matt Damon, Emily Blunt, and Florence Pugh.

Spriggs has been a nuclear-weapons physicist at Lawrence Livermore National Laboratory for 20 years. He worked on a special project where he scanned, reanalyzed, and declassified old nuclear test films.

You can find more information about the Livermore National Laboratory at: www.llnl.gov