"Too many people here want to think every time a plane crashes, something in the petroleum industry goes BOOM, or there is a natural gas explosion in a building, it is really a terrorist plot being covered up by the government."
And too many people in positions of authority have immediately stated that terrorism has been ruled out, when there has been no time to establish cause. Take, for instance, the first plane to crash into the World Trade Center.
Until the second plane showed up, there was no proof it was terrorism.