I suppose that families tend to close ranks as part of the grieving process. And perhaps public finger pointing at the authorities is natural in that context, especially since mistakes were clearly made. No doubt they have private opinions regarding how responsibility should be divided up.

One of the links I posted earlier really does give some insight into what went wrong. It doesn't answer every question, but for anyone who hasn't seen it yet, it's worth the time: http://www.theglobeandmail.com/servlet/story/RTGAM.20090226.wskier0226/BNStory/National/home