Character mistake: Sam told Tyler, "I work 36-hour shifts, so no time for friends or relationships." There might not be Federal regulations restricting the number of hours a nurse may work in a given 24-hour (or 7-day) period, but nurses have to maintain standards of duty/care and working too many consecutive hours would jeopardize her patients. It is recommended that nurses do not work more than 12.5 hours a day or more than three consecutive DAYS of 12-hour shifts. This gives 4 days OFF for relationships. (00:26:50)
Continuity mistake: A full moon was shown, but it was quite dark even around the campfire. When the man came and said there was something in the field, the sky was black. About a minute later when Cameron tripped/fell, there was (moon) light near the ground. (00:16:09 - 00:18:19)