Federal bureau investigation, the FBI, is considered the strongest police agency in the United States because it has control over other police agencies around the states. The FBI as a police agency has its pluses and minuses; therefore, looking for searching for serial killers and control other police agencies are some of its pluses. In the other hand, the over react of dealing with civilians, and the unsupervised job that they do hold to be some of its minuses. One of the most important jobs that the FBI does is to chase and follow dangerous serial killers who in danger their society. One example of that is catching the train serial killer. Rafael Martinez or Ang