At what point warrants calling authorities? How do they know that someone is about to go postal?
When they say "I'm going to kill myself and take others with me" or they show a previously absent obsession with guns and death.
But, not everyone that commits those acts make their intentions known beforehand. There have been many cases where friends and neighbors have said in front of news camers that they are totally shocked that said person would ever do something like that. Silent depression doesn't always reveal itself. And, some just hold everything inside until the fuse finally hits the powder. Yes, I agree, there are signs of what might happen in some cases, but, again, what are the sure signs and the unmistakable warnings? Regularly handling guns is not an indicator that a mass killing is in the future. I handle my rifles several times a year during off-season to make adjustments and alterations. I have no intentions to harm anyone, nor to harm myself. And, there have been times of extreme anger caused by terrible acts, that I have said that I would wipe out as many of them ( those that caused my anger ) as I could if given the chance. Examples: News stories of child molestion, abuse and mistreatment of the elderly, injustices in our judicial system, the rape of young girls, etc. --- Those stories get me very angry and upset. I greatly dislike those that commit those terrible inhumane acts. But, I do NOT act on that anger. I do not go postal. I do NOT harm anyone. But, I'm very vocal about how I feel towards certain people. Would you report me?