Fallon and her team need answers. But before they can storm the PAC base on Earth, they need to find supplies and deal with Fallon's memory loss. Her strange dreams sure aren't helping matters. If they're memories that her brain is trying to reconstruct, her brain is just going to have to work harder at making some sense.
Either way, once they arrive at Earth, all bets are off. As soon as they steal the information they need, it will be kill or be killed.