I'm not familiar with any research that specifically gets at that aspect of the repatriation or evacuation procedure. The general approach is that these are people who have identified medical needs. They're in medical care and their psycho-social state is under consideration by the whole team that is taking care of them, from the nurse to the doctor. There are specialists available if they need specialty care. And to be honest, that aspect of what's going on is probably not highest on everyone's level of concern. If people have life-threatening injuries, no one's overly worried about the shock of the repatriation procedure. They're often focused very much on making sure these patients are safe and that their complicated medical needs are taken care of. It's at the other end, as they start to stabilize, that any good trauma team starts factoring in their psychological needs.
On April 29th, 2013. See this statement in context.