impy imp

You can go into a tent, take your helmet off and you can breathe? Then you have to put your helmet back on to go outside to breathe via a failing filter...? Tent has one zip to separate from bad air...yeah this movie is so good I need to take my head off and put it in the sand to make sense of a really badly thought out movie, that apparently has most of these reviews making out that this is the best movie they've seen...