When Buffer and the other crewmen are in the decontamination showers on deck after leaving the island, Buffer's bare back is visible and the tattoo that he got in the previous episode is not present.
At 17:20 when the team is assisting Jessica, Bomber's medical bag is 1 meter from the edge of the cliff. After assisting Jessica onto the gurney, Bomber reaches for the bag. Both her feet are planted on solid ground next to the bag. At the same time, Buffer is busy assisting Jessica on the gurney. In the next cut, Bomber's right leg is thrown behind her as she falls off the cliff and Buffer is reaching for her. It is clear these scenes were staged and done separately.
When Ro is caught up in the tree trap, he dangles there in futility for several minutes until the crew comes and rescues him. He surely would have had a knife (standard equipment) and any military man with a modicum of training would have tried to free himself. Yet he did not.