In the teaser, the taped voice refers to the crime boss played by Harold J. Stone as "John Lawson." Throughout the rest of the episode, everyone else refers to him as "Lawton."
During the mission tape scene, the agent blinded in the blast was named Warren Hays. But when Phelps makes his first appearance in the cocktail lounge impersonating Hays, he says his name his Bob Hays.