I remember attending a FAA brief during the Heli Expo 08 in Dallas. It was basically a Q and A for the operators.
One topic that came up was about the use NVGs, with the Feds explained the ins/outs certification / proposed rule making and amendments then the "anyone has questions?". There was a murmur and one operator got up and basically let their emotions out with the pretty much the words "people will die or are dying because of this rule". Then a couple of other folk joined in support.
Sure SAS can shed some light on what the Feds were restricting at the time?