What do "flash" and "hood" in 423, 424 mean?

Zobacz tłumaczenie

"Flash" is an American military term for something that is high priority. If a communications operator was given several messages to send, then the "flash" message would go first because it's very important and time sensitive. "Hood" in this context is referring to a street criminal. Someone who isn't trained or skilled, like a street thug. The speaker calls him a "Moscow-trained hood" so, it sounds like the person does have some training. By calling him a "hood" the speaker probably doesn't think much about the guy's training or about the guy himself, maybe because even with his training, the guy isn't disciplined.