Shawn Goodwin

Shawn Goodwin is the third policeman who served with Sarah pre-invasion. He is very faithful to Collins, just like the other two, but he is very high-tempered, and easily loses it. Before tthe invasion, he had many troubles, as he even beat an arrested person once. He got away easily though, since his father was friends with Collins, who was a senator. Shawn was also much thinner than the other two.
When William confronted Collins, the three policemen, except Sarah, stood by him and drew theeir weapons. Shawn got angry though and shot Sarah, injuring her on the shoulder. William then took him out instantly, killing him, and thankfully the other two policemen didn't shoot too, so there was no more killing.