Hi. I'm from Kiev, Ukraine. I was born in 1983 and I was 2 and a half years when the Chernobyl catastrophe happened. I remember 1980s and I can tell that the authors of this film made a GREAT job to show every detail of what the world look for is in the times of Soviet union. The telephones, the clothes, the haircuts, the cracked paint on the window sills, even the door glass is similar to what I remember. There are couple of things which seemed weird to me: firefighters didn't have the red stars on their helmets, and most of the time people use the short forms of the names when they talk to each other (Vasya, not Vasiliy, Lyuda, not Lyudmila).
But the most important thing that this film shows is that the soviet authoritiies lied to people about this catastrophe all the time. For example, in Kiev which is 130 km from Chernobyl, nobody knew about the high levels of radiation till the middle of May, they even held a parade on the first of May, when the level of radiation in Kiev was 100 times higher than normal (iodine131 isotope) and nobody gave us the iodine pills. Everyone who tried to tell the truth was called the provocateur and could even be fired from work.
I highly recommend to watch this film. This is a tribute to all the heroes who lost their lives in a radioactive flame and saved all of us from death.