This is not reasonable. Everybody should know enough first aid to deal with a heart attack until EMTs get there. It's not that hard, the course only takes a couple of long days. Dealing with every variety of mental illness is orders of magnitude harder. Social workers have master's degrees, not a certificate from a 2-day course.

Just let cops figure out how to do their regular jobs right, rather than making them the first responders to an embarrassingly terrible social safety net.