Dan Tangherlini was sworn into office as administrator of the General Services Administration, July 5, 2013 and manages all of the agency’s daily operations, programs and policies.

Prior to that, he served as the agency’s acting administrator for 15 months following the departure of Martha Johnson.

From 2006 to 2009, Tangherlini served as city administrator and deputy mayor for the District of Columbia and oversaw daily operations, budget development and performance management.

He also led the District of Columbia Department of Transportation from June 2000 to February 2006.

Tangherlini came to GSA from the Treasury, where he had served as chief financial officer, chief performance officer and assistant secretary for management since 2009.

His time at the Treasury also includes service as director of the Office of Small and Disadvantaged Business Utilization.

Tangherlini’s career also includes service as interim general manager of the Washington Metropolitan Area Transit Authority and chief financial officer for the Metropolitan Police Department.

He earned both his bachelor’s and master’s degree in public policy studies from the University of Chicago, as well as an M.B.A. from the University of Pennsylvania’s The Wharton School.

U.S. Navy Capt. Michael Weiner serves as the director of the electronic health record way ahead planning office for the Military Health System, where he oversees development of the Defense Department‘s EHR system.

The office was established to help transition the military health system into an interoperable and agile infrastructure for 9.6 million beneficiaries.

His previous roles include deputy program manager and chief medical officer for the Defense Health Information Management System, director of IT governance and enterprise architecture for the chief information officer of Navy medicine at the Bureau of Medicine and Surgery, and director of the information technology plans and policy.

Weiner was part of a Navy team that integrated voice recognition into the Navy Theater electronic medical record, digitized healthcare records for worldwide contingency operations and worked to create and deploy “blow out injury” kits for service members who need immediate care during deployment.

In his role as a plank owner of the Navy Expeditionary Combat Command, he served as a senior medical officer to more than 200 medical department that support 40,000 sailors worldwide.

Weiner is an active member of the American Telemedicine Association, American College of Physicians, American Osteopathic Association.

He is the military representative to the Philadelphia College of Osteopathic Medicine Alumni Board and Health and the Pentagon’s representative for Human Services’ Office of National Coordinator, Health Information IT Policy Committee.

A graduate of the Philadelphia College of Osteophatic Medicine and the U.S. Naval Academy, Weiner has received numerous awards from the Navy, including two Meritorious Service Medals, an Air Medal, an Air Medal Single Strike Award, Navy Commendation Medals and a Navy Achievement Medal.

Elena Broitman serves as acting deputy assistant secretary for manufacturing and industrial base policy at the Defense Department, where she is responsible for issues related to the defense industrial base.

Before joining the Pentagon, Broitman spent a decade on the Senate and her time there included service as senior advisor to Senator Kirsten Gillibrand.

Notably, Broitman wrote and managed cybersecurity provisions  that were included in the National Defense Authorization Act.

Her federal career was also spent serving as counsel to the House International Relations Committee, senior rule of law advisor to USAID’s Europe and newly independent states operations.

Broitman also spent nine years in the private industry before she joined the federal sector, focused on intellectual property and international policy matters at companies such as Pfizer and Register.com.

During her time at Register.com, she testified before the House Commerce and Judiciary Committees regarding intellectual property and Internet policy.

Rear Adm. Matthew Klunder serves as chief of naval research and director of innovation, technology requirements and test and evaluation since.

He previously served as a Naval Air Force commander, U.S. Pacific Fleet evaluator at VAW-110, a Naval Air Training and Operating Procedures Standardization officer, OPNAV N2/N6F2 director of intelligence, surveillance and reconnaissance capabilities division.

Since earning his wings of gold at Meridian, Miss., in September 1984, Klunder has completed flying tours in California, Maryland and Japan.

Klunder is the recipient of the  1988 Hawkeye of the Year award, the 1991 Test Pilot of the Year award, the 2002 George C. Marshall Statesman award, four Legion of Merit, two Defense Meritorious Service Medal, two meritorious service medals, two Joint Commendation medal, four Navy and Marine Corps commendation medals and other unit and campaign awards.

A 1982 graduate of the U.S. Naval Academy, Klunder has a master’s degree in aerodynamics and aviation systems from the University of Tennessee and a master’s degree in strategic studies from the National War College.

Roberta Stempfley serves as acting assistant secretary for the Department of Homeland Security’s Office of Cybersecurity and Communications, where she is responsible for directing CS&C and its five divisions.

Stempfley was most recently the CS&C’s deputy assistant secretary and national cybersecurity division’s director.

She previously served as chief information officer for the Defense Information Systems Agency where she led decision making, strategy development and communication, program execution alignment with other services, operation of the global information grid, information assurance and management of information technology resources.

Stempfley is the recipient of various government service awards such as Information Week Top 50 Government CIOs, 2002 DISA Technical Team of the Year for DOD-CERT, Director’s Special Act award for service during Quadrennial Defense Review and Federal Computer Week’s 2013 Federal 100.

She holds a bachelor’s degree in engineering mathematics from the University of Arizona and a master’s degree in computer science from James Madison University, as well as a National Security Management Certification on Acquisition for Senior Leaders.

Rendell Jones serves as associate director for the U.S. Citizenship and Immigration Services Management Directorate where he oversees management and infrastructure services for USCIS’ operations.

In his role, Jones is responsible for the offices of the chief financial officer, information technology, human capital and training, contracting, administration, intake and document production, equal opportunity and inclusion and security.

He most recently served as chief financial officer at USCIS.

Jones first joined the federal government in 1996 and held budgeting roles as a presidential management intern at the Justice Department before becoming an appropriations liaison officer at the justice management division and spending a year with the civil rights division.

He previously worked to help the Department of Homeland Security formulate and execute plans for DHS’ $42 billion annual budget as deputy budget director.

Jones also served as DHS’ lead executive on appropriations issues and principal liaison with the appropriations committees of the Senate and House of Representatives.

He earned a bachelor’s degree in finance, cum laude, from the Virginia Commonwealth University and a master of public administration from North Carolina State University.

Jones has received the Presidential Rank Award for Meritorious Executive and the DHS’ Secretary’s Silver Medal, the department’s second highest honors.

David DeVries serves as the Defense Department’s deputy chief information officer for information, integration and technology where he works to consolidate department rules in order to build information assets for DoD personnel, organizations and partners.

DeVries currently works with various groups to develop a joint DoD-Veterans Affairs electronic health record system and complete the DoD information technology enterprise for additional warfighter capabilities and cybersecurity infrastructures.

The IT, information management and command and control systems veteran previously helped the U.S. military establish its enterprise information sharing and IT technologies.

A 29-year U.S. Army officer, DeVries held various lead roles in command and control communications and information management and technology during his military career.

DeVries earned a bachelor’s degree from the U.S. Military Academy at West Point and a master’s degree in electrical engineering from the University of Washington in Seattle, Washington.

The Army Senior Service College graduate also served as a corporate fellow with IBM Business Consulting Services and joined the Secretary of Defense Corporate Fellowship Program.

Richard Clarke is the former U.S. national coordinator for security, infrastructure protection and counter-terrorism and served in a number of other national security roles during his career.

Clarke most recently served as presidential special advisor on cybersecurity until 2003 under former President George W. Bush.

He was appointed counter-terrorism security group chairman and National Security Council member in 1992 after working for the State Department as assistant secretary of state for political-military affairs under former President Ronald Reagan.

Clarke became the NSC’s national coordinator for security, infrastructure protection and counter-terrorism in 1998 when he was appointed to the role by former President Bill Clinton.

Since retiring from public service, Clarke has written a number of books including Defeating the Jihadists: A Blueprint for Action, Against All Enemies,  The Scorpion’s Gate, Breakpoint and Cyber War.

Juan Zarate serves as senior adviser of transnational threats, homeland security and counterterrorism programs at the Center for Strategic and International Studies.

Zarate most recently worked to implement U.S. counterterrorism and security policies as presidential deputy assistant and deputy national security adviser for combating terrorism between 2005 and 2009.

He previously led efforts to crack down on terrorist financing worldwide, wielded the Treasury Department’s national security jurisdictions and aided in the capture of Saddam Hussein’s assets in his role as assistant treasury secretary for terrorist financing and financial crimes.

A former Rotary International Fellow at Universidad de Salamanca, Spain, Zarate also served on terrorism prosecution panels before the 9/11 attacks.

The visiting lecturer at Harvard Law School authored the book “Treasury’s War: The Unleashing of a New Era of Financial Warfare, Forging Democracy” and contributed articles for the New York Times, Washington Post, Wall Street Journal and Los Angeles Times, among other publications.

He hosts the “Flash Points” program on CBSNews.com and serves on the advisory boards of the National Counterterrorism Center and HSBC’s Financial Services Vulnerabilities Committee.

Zarate holds a degree from Harvard College and Harvard Law School.

Rear Adm. Katherine Gregory has been commander of the Naval Facilities Engineering Command and chief of civil engineers since Oct. 26, 2012.

She was most recently the commander of Naval Facilities Engineering Command Pacific and the Pacific Fleet civil engineer.

Her tenure at the Naval Construction Force, Seabee, was spent mostly with the Amphibious Construction Battalion One and Naval Mobile Construction Battalion One, where she served as commanding officer of NMCB 133 and commander of the 30th Naval Construction Regiment.

Gregory was the First Naval Construction Division’s chief of staff and had been deployed to the Western Pacific, Mediterranean, Iraq and Haiti during her Seabee tours.

She also toured in Japan, Italy, San Francisco, Alaska and Pearl Harbor and conducted staff tours in Washington as action officer of Seabee and Chief of Naval Operations Overseas Bases.

A 1982 graduate of the U.S. Naval Academy, Gregory is a registered professional engineer in the Commonwealth of Virginia, a qualified military parachutist and a Seabee combat warfare officer.

She earned graduate degrees from the University of Southern California and George Washington University and attended the Senior Executive Program at the London School of Business.