@Girlmama3
I think they all know they were too slow. I don't think constantly dragging it up helps, it reminds the families of those who lost lives that it could have been avoided.
So do you agree we should always just forget/ cover up when people's negligence, and incompetence in their jobs leads to deaths ?
Hillsborough and Grenville come to mind where investigations took place afterwards and we didn't argue that families might be upset if they knew the deaths of their family members might have been avoided if some people had done their jobs better.
We didn't argue that it all happened a long time ago and it should be forgotten and we should ' move on' in case it upsets people 
Do we refuse to prosecute suspected murderers because the murder happend a year ago and we need to move on ?
if not for the self obsessed, narrow minded , obtuse, selfish, shortsighted inflexible individuals whose actual job it was / is to deal with national emergencies we might have had many fewer deaths . Whilst it may not be possible to.prove that, it is certainly possible to judge the government's reaction by the barometer of how prepared they were and how 'reasonable' their actions were with the evidence they had from.what was happening elsewhere and the specialist advice they were given at the time