I wonder if the builders of the World Trade Center towers that collapsed on 911 have been sued? After all, they designed the buildings to withstand the impact of a fully fuel-laden Boeing 707 without collapsing. Therefore, the collapse and resulting loss of life should result in a number of lawsuits being brought against the engineers who designed the buildings- for negligence and breach of contract. That is, unless the multiple reports and recorded sounds of explosions in the buildings meant that they were actually brought down by explosives and not by the fires on that day. I would like to see a court case to examine these issues.