Skip to main content
Portrait of the Secret Service Director Randolph D. Alles


Randolph D. Alles

President Donald Trump appointed Randolph D. "Tex" Alles as the 25th Director of the United States Secret Service on April 25, 2017.

Mr. Alles previously served as the Acting Deputy Commissioner of U.S. Customs and Border Protection. In this role, he served as the agency’s Chief Operating Officer.

Mr. Alles has previously held several leadership positions at CBP. In October 2016, he was named Acting Executive Assistant Commissioner, U.S. Customs and Border Protection, Enterprise Services. Enterprise Services provides specialized skills, resources, equipment, and other tools that enable CBP's frontline personnel to safeguard America's borders and enhance economic competitiveness.

Prior to being named to that position, Mr. Alles led CBP's Air and Marine Operations (AMO), a federal law enforcement organization dedicated to serving and protecting the American people through advanced aeronautical and maritime capabilities. With 1,200 federal agents, 256 aircraft, and 286 marine vessels operating from 74 locations throughout the United States and Puerto Rico, AMO conducts its mission between ports of entry, in the air and maritime environments, and within the nation's interior.

Mr. Alles joined AMO as the Deputy Assistant Commissioner in March 2012 and was appointed as the Executive Assistant Commissioner in January 2013. Prior to joining AMO he served in the U.S. Marine Corps for 35 years, retiring in 2011 as a Major General. He served in numerous leadership positions in both the Marine Corps and joint commands. Throughout his military service he gained extensive experience in flight training, standardization, operations, quality assurance, logistics, and aviation maintenance.

Mr. Alles received his bachelor's degree from Texas A&M University in 1976 and his Master of Arts in National Security and Strategic Studies from the Naval War College in 1999. His squadron (VMFA-312) was awarded the 1997 Robert M. Hanson Award for Marine Corps Fighter Attack Squadron of the Year. His military honors include the Distinguished Service Medal, the Defense Superior Service Medal with Oak Leaf cluster, the Legion of Merit with Combat V and Gold Star, the Meritorious Service Medal with Gold Star, the Air Medal with strike/flight numeral 3, and the Navy Commendation Medal with Gold Star.

Portrait of the Secret Service Deputy Director William J. Callahan

Deputy Director

William J. Callahan

William Callahan was appointed as Deputy Director on December 29, 2016. As Deputy Director, Mr. Callahan executes oversight of the agency’s daily operations, including approximately 6,500 personnel and $1.67 billion budget. He also develops and implements policy as it relates to the agency’s investigative and protective mission.

A 26-year veteran of the Secret Service, Mr. Callahan has risen through the ranks, having begun his career 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.

In February 2013, while serving as the Deputy Assistant Director of Protective Operations, Mr. Callahan was appointed to serve as the Chairperson of the Sequestration Working Group (SWG) where he was responsible for identifying areas where funding could be reduced without adversely impacting the agency’s integrated mission. The development and execution of this plan permitted the agency to achieve its goal ($84 million) with no direct impact to the protective mission and no furlough days having to be implemented for the agency’s workforce.

In February 2015, as Assistant Director for Protective Operations, Mr. Callahan had oversight of the agency’s Uniformed Division, 10 protective divisions, policies, programs and operations which included the 2015 Papal visit to Washington, D.C., New York City, NY, and Philadelphia, PA, as well as the concurrent 70th United Nations General Assembly (UNGA); the 2016 Republican National Convention and Democratic National Convention; the 71st UNGA; as well as the 2016 Presidential Campaign and recent Presidential Inauguration.

Mr. Callahan holds a Master’s of Science degree in Education from Johns Hopkins University (2007) and an undergraduate degree in Bachelor of Arts and Science from Manhattan College, NY (1991).

Portrait of the Secret Service Chief Operating Officer George D. Mulligan

Chief Operating Officer (COO)

George D. Mulligan

George D. Mulligan was appointed Chief Operating Officer on July 30, 2015. Mr. Mulligan serves as the principal administrator responsible for planning and directing all business and programmatic activities for the Secret Service. He provides executive oversight of the Office of the Chief Financial Officer, the Office of Human Resources, the Office of Strategic Planning and Policy and the Chief Information Officer.

Mr. Mulligan has more than 29 years of national-level experience in executive staff functions, aviation, facility and security operations; national security and contingency policy, planning and program management; strategic and tactical communications; and crisis-action decision making. A former naval officer, he has been a member of the Senior Executive Service since February 2007.

Prior to joining the Secret Service, he served as the Chief of Staff to the Under Secretary of Defense for Acquisition, Technology and Logistics, managing a functionally diverse staff to support the Under Secretary of Defense in oversight and decision-making for major DoD acquisition programs; nuclear, chemical and biological programs; defense research and engineering; logistics and material management; installations, environment and operational energy; international cooperation; manufacturing and industrial base policy; special programs; and on media matters and communications with Congress and defense industry.

From July 2013 - May 2014, Mr. Mulligan served as the Deputy Director Washington Headquarters Services and Director of Enterprise Management. He provided oversight, leadership and direction to more than 3,000 civilian, military and contractor personnel providing centralized facilities, security, information technology, communications, human resources, contracting, and financial services support to DoD activities in the National Capital Region. As the Director of Enterprise Management, he provided oversight of integrated business and customer service operations, and analytical teams focusing on corporate process and performance improvement.

Mr. Mulligan served as Deputy Assistant to the President of the United States and the Director of the White House Military Office from 2009 to 2013. He led and directed more than 2,300 military and civilian personnel, in eight headquarters directorates and seven operational units, providing world-wide transportation, communications, facilities and other logistical and contingency program support to the President, Vice President, and White House staff. He provided executive level representation with the White House staff, the Office of the Secretary of Defense, the Joint Staff, the U.S. Secret Service, military Combatant Commanders, military Services, Defense Agencies and other federal agencies.

He holds a Master’s Degree in Public Administration from Harvard University’s Kennedy School of Government and a Bachelor of Science Degree in Business Administration from Villanova University. His civilian awards include the Presidential Rank Award of Meritorious Executive, the Department of Defense Medal for Distinguished Civilian Service, and the Secretary of Defense Meritorious Civilian Service Award.