This coming from the guy who chewed me out because I didn't like Ult.Vision based on the preview....:?
It happens in Leadville, Colorado. Theres plenty of military activity around Leadville, and plenty of old mines to turn into military bases. I assumed some of the indoor shots we saw happened inside the military bunker.
This trailer isn't garbage...Its an interesting teaser. I think if you make up your mind this early to hate it, you might be missing out on a killer zombie movie. Might being the key word.
Like you said, we still haven't seen the bunker, or any good zombie scenes,