You know, it's very interesting, because they did a very large-scale study in the U.K. on military people. They screened them for likelihood to develop post-traumatic stress disorder specifically. The people who they determined—based on childhood experiences of trauma and a bunch of different screening tools—were most likely to develop post-traumatic stress disorder were not allowed to deploy with their unit when their unit was going overseas, but the people who were not allowed to be deployed were more likely to develop post-traumatic stress disorder after the deployment, because of being separated from their unit, than they were had they gone into theatre.
As Zul said, it's a very loaded question to talk about screening. I think the more mediated response, as he suggested, is probably to identify if people are predisposed to developing a mental health issue and then help build resilience or help work on treatment programs, but don't take them out of their workplace and single them out. From speaking with people in corrections, I know that this is especially important for them. They know they're targeted, because they're taken off the floor if they're suffering from a mental health issue.