I can’t think of any call where they need to go in guns blazing unless they can actually see that someone’s shooting, or in the process of being killed.

Anything else and there’s time to peek in windows, send a drone up to upper floor windows, and so-on.

Even if it is an actual situation where someone is in mortal danger, doing that will mean they’re not walking into a dangerous situation blind.

If they do that and can’t see anybody in any kind of distress or danger, then the logical thing is to calmly knock on the door and ask some questions.