title: William J. Callahan
text: # William J. Callahan
  
  William J. Callahan is the Deputy Director of the United States Secret Service. He served as the Acting Director from March 4, 2017 until April 25, 2017.
  
  ## Secret Service career
  
  He began his career in the United States Secret Service in 1991 as a Special Agent assigned to the New York Field Office. He has since served in a variety of management level assignments which include: Assistant Director of Protective Operations; Deputy Assistant Director of Investigations; Deputy Assistant Director of Administration; Special Agent in Charge of the Detroit Field Office; Assistant Inspector within the Inspection Division; Assistant to the Special Agent in Charge (ATSAIC) of the Presidential Protective Division; and ATSAIC for the Office of Homeland Security. In April 2011, Mr. Callahan was selected for the Senior Executive Service.
  
  ## Education
  
  Callahan holds a Master of Science in Education from Johns Hopkins University and an undergraduate degree in Bachelor of Arts and Science from Manhattan College.
  
  ## Deputy Director of Secret Service
  
  He was appointed Deputy Director on December 29, 2016 and left August 3, 2019.
  
  