It was an excellent course which introduced me to Walk The Talk America. WTTA is, in their own words, "bridging the gap between mental health and safe gun ownership". I think it's an important thing to acknowledge that suicide by firearm is a big problem, and also that gun owners tend to avoid seeking help for their mental health due to the fear that they will have their guns taken from them.
One of the coolest things WTTA does is offer a free, anonymous mental health screenings for multiple mental health issues. They're also working with educating mental health professionals on how to talk to gun owners. Though we may not think of gun owners as a "culture", it truly is, and mental health professionals should be well-versed in how to help those of us in this culture.
I can't do WTTA justice here, so do yourselves a favor and click on over to their site to explore.