Continuity mistake: When the Zidorans surround Logan, Jessica, and Rem, the closeup shot shows Logan with his hand on his weapon. The next long shot from the rear shows Logan's hand off the weapon and hanging by his side.
Continuity mistake: Irene raises the rifle scope to her eye and chambers a round to shoot Jessica, but the next camera angle shows her raising and loading the rifle again, only at a lower angle.
