This is the second episode in which the lighthouse was destroyed. With not enough time having passed to rebuild it since the first, this is a continuity error.
At 3:58, Arla Cogan raises her gun at Audry and there is a clicking sound like when a handgun is cocked or the safety is taken off. She is holding a Glock which has no safety and she is holding a cell phone in her left hand so she could not be cocking the gun.