 FACT: At the climax of the film, a group of endangered smokejumpers  is supposedly making their way to a river and safety. However, they  are clearly moving uphill. You move uphill to get to a ridge (a  fairly safe place to be in a wildfire); you move downhill to get to  a river. Also, the entire notion of using retardant drops to save  lives from a running timber fire is bogus. Retardant is dropped to  slow down (retard) fires so they can be fought more safely, not to  save lives.