Factual error: "SOS" is written in the sand on the beach, close to the shoreline. A helicopter lands nearby and four people walk on the sand, leaving shoe imprints over a wide area. The helicopter departs, and the "SOS" is written as it is before the rescue, completely unscathed. The helicopter's rotating blades would disturb/scatter sand and cover most, if not all, of the "SOS." (00:06:14 - 00:06:35)
Continuity mistake: The man picks up his duffel bag and swings it over his shoulder, but does not use its strap. He runs through the woods, and the strap is over his shoulder. Just before he runs onto the beach, he swings his bag over his shoulder, as if he does not use the shoulder strap in the woods. (00:01:40)