Training is an important component to an overall strategy, and I think you need to look at other pieces as well.
There is excellent training that's already been developed. I'm thinking of ASIST, for example, which is being used throughout the world. Something like ASIST is very accessible to the average person. It does not require a background in mental health or health care.
There are very simple things we can do to train people to become gatekeepers and to help to assess somebody who may be at risk, and then help them get the support they need. It's not about training people to become therapists, clinicians; those people are available. We need to know how to identify people and then link them to resources.