Hi Lins,
The emergency services workers first on the scene(s) were offered and sought counselling. The social workers attached to one of the families, typically, were not. I had an offender on my caseload literally blow his brains out about three years ago. It happened less than a few hours after I saw him, to advise of a disclosure that would have put him away for some time. It took the management two weeks to ask if I was OK, (I was, but that is hardly the point). We now have worker initiated critical incident debriefing, if needed, after increasingly violent/threatening incidents and deaths. Some workers take it up, some don't. My other half is also a social worker, so I tend to debrief with him. I am not too good at the professionally led stuff. 