 PLOT: When the cannibals set fire to the watch tower, Chris, Jesse,  and Carly escape the flames by jumping down into a nearby tree. They  havent jumped very far. However, once they are in the tree, there  is no recognition of a fire going on twenty feet above them. Large  fires are typically able to be noticed from certain distances.. So,  in reality, there should be a bright orange glow, smoke, and noise,  evidence of the watch tower that is burning to the ground nearby.  nearby.