Fraser doesn't learn Ray's real name until early in this episode, but later he tells Ray that he had his fingerprints and used them to learn about the citations he's received. If he had Ray's fingerprints and career history, he should have learned his true identity before now.
Lt. Walsh refers to the local 6:00 and 11:00 news, but in Chicago, the local news broadcasts air at 5:00 and 10:00.