Staff members of the National Commission on Terrorist Attacks Upon the United States, their roles and career highlights:

Alexis Albion, professional staff. Former historian of the International Spy Museum.

Scott Allan, counsel. Former special counsel to U.N. Ambassador Richard Holbrooke.

John Azzarello, counsel. Attorney at Carella Byrne in New Jersey, former deputy chief of criminal division in U.S. attorney's office in New Jersey.

Warren Bass, professional staff. Senior fellow at the Council on Foreign Relations.

Bruce Berkowitz, consultant. Research fellow at the Hoover Institution at Stanford University, intelligence analyst at RAND Corp., consultant to office of Defense Secretary Donald Rumsfeld.

Mark Bittinger, professional staff. Policy analyst with Science Applications International Corporation.

Sam Brinkley, professional staff. Former policy adviser on weapons of mass destruction in the State Department's Office of the Coordinator for Counterterrorism.

Daniel Byman, consultant. Assistant professor of security studies at Georgetown University, previously director for research at RAND Center for Middle East Public Policy.

Dianna Campagna, manager of operations. Former principal director of Housing and Urban Development Department's Executive Secretariat.

Sam Caspersen, counsel. Former attorney with Sullivan and Cromwell in New York.

Melissa Coffey, administrative assistant. Former communications assistant at the U.S. Commission on International Religious Freedom.

Lance Cole, consultant. Assistant law professor at Penn State's Dickinson School of Law, deputy Democratic special counsel for Senate Whitewater Committee.

Raj De, counsel. Former litigation associate at O'Melveny & Myers, former trial attorney at the U.S. Department of Justice.

Thomas Dowling, professional staff. Adjunct professor at the Joint Military Intelligence College, former foreign service officer.

Steve Dunne, deputy general counsel. Assistant U.S. Attorney in Maryland.

Margaret Edwards, communications consultant. Director of external relations at University of Virginia's Miller Center of Public Affairs.

Thomas Eldridge, counsel. Former assistant U.S. Attorney for the District of Columbia.

John Farmer, senior counsel. Former New Jersey attorney general.

Al Felzenberg, deputy for communications. Former communications consultant to Navy Secretary Gordon England.

Susan Ginsburg, counsel. Former senior official in the Treasury Department's Office of Enforcement.

Doug Greenburg, counsel. Former litigation partner at Winston and Strawn, former staff attorney with the Securities and Exchange Commission.

Barbara Grewe, counsel. Associate general counsel at General Accounting Office, special investigative counsel for Justice Department Inspector General's Sept. 11 review.

Karen Heitkotter, executive assistant. Formerly with the State Department and the National Security Council.

Dana Hyde, counsel. Former attorney with Wilmer, Cutler & Pickering in London and Zuckerman Spaeder in Washington, special assistant to the deputy attorney general, special assistant to the president for Cabinet Affairs in the Clinton administration.

John Ivicic, security officer. Former security officer for joint congressional inquiry on Sept. 11.

Michael Jacobson, counsel. Worked on joint congressional inquiry, former intelligence analyst in the FBI's National Security Division.

Bonnie Jenkins, counsel. Fellow at Harvard University's Belfer Center for Science and International Affairs, formerly worked on the National Commission on Terrorism and as general counsel for the Commission on the Organization of the Federal Government to Combat Proliferation of Weapons of Mass Destruction.

William Johnstone, professional staff. Former senior policy adviser and legislative director for Sen. Max Cleland, D-Ga.

Stephanie Kaplan, special assistant. Former assistant director for international security at the Center for Strategic and International Studies.

Janice Kephart-Roberts, counsel. Former counsel to Sen. Jon Kyl, R-Ariz., for the Senate Judiciary Subcommittee on Technology, Terrorism and Government Information.

Miles Kara, professional staff. Retired Army intelligence officer, worked on joint congressional inquiry.

Christopher Kojm, deputy executive director. Former deputy assistant secretary for intelligence policy in the State Department.

Gordon Lederman, counsel. Former associate in the National Security Law and Policy Group of Arnold & Porter.

Dana Lesemann, counsel. Worked on joint congressional inquiry, former attorney at Justice Department's Office of Intelligence Policy and Review.

Matthew Levitt, consultant. Senior fellow in terrorism studies at the Washington Institute for Near East Policy, former intelligence research specialist in the FBI's International Terrorism Intelligence Unit.

Douglas MacEachin, professional staff. Historian, retired CIA analyst, former deputy director for intelligence.

Daniel Marcus, general counsel. Associate attorney general in the Clinton administration, former partner and member of management committee at Wilmer, Cutler & Pickering.

Ernest May, consultant. Charles Warren Professor of History at Harvard University.

John Raidt, professional staff. Former legislative director for Sen. John McCain, R-Ariz., chief of staff for the Senate Commerce Committee.

John Roth, counsel. Former chief of Justice Department's asset forfeiture and money laundering section.

Peter Rundlet, counsel. Former attorney in the political law group at Skadden, Arps, Slate, Meagher & Flom.

Kevin Scheid, professional staff. Senior intelligence service officer, staff director for intelligence review ordered by President Bush in May 2001.

Kevin Shaeffer, professional staff. Navy lieutenant medically retired due to injuries sustained in the Sept. 11 attack on the Pentagon.

Tracy Shycoff, deputy for administration and finance. Civil servant with General Services Administration.

Lisa Sullivan, administrative assistant. Former government affairs assistant at the U.S. Commission on International Religious Freedom.

Betty Swope, professional staff. Former consul general in Guadalajara, Mexico.

John Tamm, professional staff. Supervisory special agent in the FBI's Justice Task Force, Criminal Investigative Division, front-line supervisor in Boston during FBI's investigation of the Sept. 11 hijackings of American Airlines Flight 11 and United Airlines Flight 175.

Yoel Tobin, counsel. Attorney in the Justice Department's counterterrorism section.

Emily Walker, professional staff. Former managing director and chief of staff, Citigroup.

Garth Wermter, consultant for technology development. Director of technology at University of Virginia's Miller Center of Public Affairs.

Serena Wille, counsel. Associate attorney in the global banking group of Allen and Overy in New York City.

Peter Yerkes, consultant. Former public affairs officer with the Port Authority of New York and New Jersey.

Philip Zelikow, executive director. Director of the Miller Center of Public Affairs and White Burkett Miller Professor of History at the University of Virginia.