1933, on the same weekend as the Kansas City Massacre, they kidnapped William Hamm, a millionaire Minnesota brewer outside of his office. After the gang was paid a ransom of $100,000, Hamm was released. Shortly after this, they abducted St. Paul banker Edward Bremer, who was released after the gang was paid $200,000 by his family. The kidnappings, however, led to the gang's end. The father of the kidnapped Edward Bremer was a friend of President Franklin D. Roosevelt. Roosevelt had even mentioned the kidnapping in one of his fireside chats, and fueled also by the Lindbergh kidnapping, the FBI and local police bureaus greatly stepped up their pursuit of those engaged in these types of crimes. The FBI had by this time organized a group of highly skilled agents called the "flying squads," which specialized in hunting down the leading public enemies, and they had been very effective. The year 1934 alone saw the deaths of John Dillinger, Bonnie and Clyde, Charles "Pretty Boy" Floyd, Lester "Baby Face Nelson" Gillis, John "Red" Hamilton, Homer Van Meter, Tommy Carroll, and Eddie Green. Just after Ma and Fred's death in a shootout with the FBI on January 16, 1935, Karpis nearly met his own violent end when the FBI located him in Atlantic City, New Jersey. Karpis and Harry Campbell managed to shoot their way to an escape, though Karpis' eight-month-pregnant girlfriend Dolores Delaney was hit in the thigh by a wild shot fired by Campbell. She was captured along with Campbell's girl. Dolores gave birth to a son, who was adopted by Karpis' parents. Karpis and Campbell hid out with brothel-keeper Edith Barry for several months. Karpis continued his crimes with others, but had to keep on the move more than ever, as he was the fourth and last of the FBI's Public Enemies Number One, the previous three—John Dillinger, Pretty Boy Floyd and Baby Face Nelson—having been killed. He did manage to pull off a crime that echoed the times of the "Old West," a train robbery in Garrettsville, Ohio, which netted $27,000. After the death of Ma and Fred, Karpis allegedly sent word to FBI chief J. Edgar Hoover that he intended to kill Hoover the way Hoover had killed Ma and Fred. According to Karpis in The Alvin Karpis Story, the death threat was a rumor started by Hoover himself. Pursuit and capture by FBI The FBI