I'm also scratching my head wondering where my first reply to you went! In the post I talked the ANVIS 6 &9 and about our own production of a digital viewer called the NiteMax (introducted years before the Bushnell unit) and our related market experiences as we attempted to establish the product line. Oh well....
In any event, we do not recommend low end commercial NV units for first responders for obvious reasons. You get what you pay for as they say....
US Night Vision Corporation