One needs to remember that any charges need to go before a court of law. One of the main things to look at is were a person's actions "reasonable in the circumstances".
As far as the second law is concerned, in those circumstances it would have been reasonable to discharge the firearm to save lives. If the concealment law was brought before a court, I doubt any jury would convict the perpetrator (in the circumstances).
Sir, you are correct. Thank you for this explanation.