Wave 2: “Surf’s Up.” The aliens dropped a giant metal rod on one of the rifts in the tectonic plates, causing massive tsunamis all around the world, taking out anything that was near the sea. Wave 3: “Pestilence.” Birds all around the world transmitted a disease to humans, worse than the Black Plague, ending the lives of 7 billion people. Wave 4: “Silencer.”The aliens disguised themselves as humans and sniped all of the humans they saw without making a noise. However, a few people have managed to survive. Cassie Sullivan is one of the last humans alive, because she found a way to adapt to the new way of life. When she was shot in the leg by a silencer, she hid under a car, bandaged her leg, and waited until she had enough strength to run. (From the perspective of an enemy silencer) “But Cassie Sullivan didn’t