Fedor Alexandrovich

Himself

Andrei Alexandrovich

Fedor's Father

Igor Alexandrovich

Fedor's Son

Natalia Baranovskaya

Chernobyl Historian

Andrei Bilyk

Chernobyl Chief Engineer

Fedor Chebanenko

Duga Data Commander

Charlie D'Agata

Himself - CBS News Foreign Correspondent (archive footage)

Anatoly Duatlov

Chernobyl Engineer