I'm sure there are a lot of different answers to that question. However, I will give you one. I think peers need to be involved.
For example, the Correctional Service of Canada has developed a peer helper program which is primarily aimed at enhancing screening of mental health problems associated with critical events that have occurred as part of prison guard work, for example. The Operational Stress Injury Social Support Program can probably provide some assistance in that regard, if the program is connected to the Department of National Defence. I'm not sure whether it is limited to Veterans Affairs Canada or not. That could contribute.
This is how the Correctional Service of Canada's program works: the organization selects a certain number of workers or individuals within that organization who it believes have a natural ability or natural skills in terms of active listening, but who can also interact appropriately with their colleagues who have witnessed critical events. Let's take the example of a fight between two inmates: they have to come between the two to separate them, there is bleeding during the fight and one of the two fighters who was bleeding was HIV positive. That's the kind of event that the organization deems to be critical.
The procedure followed at that point involves a peer helper, to whom a certain number of people are assigned, going to talk to the prison guard involved in the incident, although not to ask him to talk about what happened, as you would in a debriefing. That is one of the aspects of this program that I find absolutely brilliant, as a matter of fact. He simply goes to see the guard and talks about some of the possible signs of post-traumatic stress; he tells him that if he ever requires assistance because he doesn't feel well or is constantly thinking back on what happened, he shouldn't hesitate to go and see him to get help or receive information about the kind of help that is available.
I believe a simple procedure such as that, which is non-intrusive and allows the individual to see for himself that support is available, if need be, is one example of the kind of process that could be applied to military contingents. That is a first suggestion.