I:Scintilla

In the end, Russian was never properly taught to me (there was only one lesson on the schedule every two weeks, and even that was almost always replaced with foreign literature), hence my lack of knowledge of many rules, especially regarding commas. What am I trying to say? I think that for a person who didn't study Russian at school and who lives in another country, I know it quite well.
As a result: given the above, most of the "nitpicking" is inappropriate.

I'm interested in the entire squad composition.

I didn't think it was necessary to give names to minor characters.

And I'm a bit of an idiot; I didn't quite understand what you meant by "van."

Just type the name into Google; go to Wikipedia – it doesn't matter, find the definition. Think of it as something like a Volkswagen Transporter (T5), but something newer. By 2016, the automotive industry hadn't stood still either. In any case, I don't think it's worth going into such details.

To conceal what crime? I'm curious.

Probably the murder of students. Does that make sense?