I agree with the sentiment of the article. I think the suicide hotline should also include a mental health hotline, or make a mental health hotline a separate number. I think that would help prevent some of these mass shootings. Perhaps a potential shooter, between planning and action, might have a moment of clarity where they know what they are doing is wrong and could call the number. The result could be a simple conversation along with a notification to local or federal authorities.
Here is an interesting take on the profiles of mass shooters. The part that jumped out at me is we need to be profiling these people as serial killers rather than domestic terrorists. He is basing his opinion on a study of mass shooters from today back to 1966.