At the time of this interview, Robert Bradley was the interim component manager ofsafety and security at the Justice Sector Development Programme in Freetown, Sierra Leone. His career in policing began in 1966 when he joined the former Australian Capital Territory police. In 1967, he was drafted into the army and he served in Vietnam. On his return to Australia in 1969, Bradley was reappointed to the ACT police. He participated in community policing in Jervis Bay and later, he worked on criminal investigations and in the Juvenile Aid Bureau. Bradley also served in the general policing division, which dealt primarily with positions related to United Nations work such as recruitment and training of officers for overseas deployment. He was a part of the U.N. missions to Cyprus, Cambodia and Mozambique. In 1995, Bradley resigned from the police force and set up police training programs in Bosnia, Eastern Slovenia, Mongolia and other areas.  

Agathe Florence Lele graduated from the Cameroon police academy in 1980, worked for 14 years in the intelligence unit, attended training in France in 2000 and 2005, served as a member of the Interpol executive committee from 2003 to 2006, and became the director of training in Cameroon during 2006-2007. At the time of this interview, she was the senior police adviser with the United Nations Integrated Mission in Burundi, a post that she began in June 2007.

At the time of this interview, Peter F. Zaizay was Liberia's deputy minister for administration and the acting minister for national security. He began his career in private security in 1986. He worked with the Jascere Security Services. In 1992, Zaizay joined the Liberian National Police, and he worked in the Patrol Division, the Criminal Investigation Division and the Criminal Intelligence Unit. He also served as an assistant director of police for press and public affairs from 2004 to 2006. Later, he became the deputy director of police for training and then the commandant of the National Police Training Academy, a position he held from 2006 to 2007.

At the time of this interview, Knut Walter was president of the Accreditation Commission of El Salvador.  He earned a doctorate in history and held academic posts at Jose Simeon Cañas Central American University for 23 years.  He was a fellow at the New York Social Science Research Council, and he served as director of graduate programs at the Latin American University of Social Sciences in Guatemala.

At the time of this interview, Carlos Humberto Vargas García was the chief of studies at the National Academy of Public Security in El Salvador, an institution separate from the national police. From 1992 to 1995, he was the first sub-director of the academy, and he trained in the U.S. and Central America with ICITAP, the International Criminal Investigative Training Assistance Program. He also worked in the private sector, in other universities in El Salvador as a professor of engineering, and for the Instituto Salvadoreño de Formación Profesional, which is in charge of non-formal education.

At the time of this interview, Astor Escalante Saravia was El Salvador's vice minister of public security and justice, a post he held since 2006.  He was the director of the penitentiary system in 2005, after working for eight years in the National Public Prosecutor’s office as a prosecutor and chief prosecutor.  Previously he served as an adviser to the Ministry of Government, which oversaw the security sector until the Ministry of Public Security was created with a mandate to govern the police and associated agencies.

At the time of this interview, Robin Campbell was a consultant for both public and private-sector organizations undergoing structural change, with a particular emphasis on police services in developing countries. He previously was the deputy change manager and director of corporate development responsible for the implementation of the Patten Commission recommendations for the police in Northern Ireland.  The Patten recommendations guided the 10-year process of police reform that saw the Royal Ulster Constabulary transformed into the Police Service of Northern Ireland.  Campbell served as the chief superintendent of the police service before launching his own consultancy.  He worked in many countries in the developing world.

At the time of this interview, José Hugo Granadino Mejía was chief of the professional training unit of the National Police of El Salvador. A lawyer and notary, he in 1993 became one of the first professors at the National Academy of Public Security (Academia Nacional de Seguridad Pública), an institution separate from the National Police. He also served as director of study and later as director general of the academy, and he worked as a professor of law at the Universidad de El Salvador for 25 years and at the Universidad Tecnológica de El Salvador.

Mark Kroeker served as the civilian police adviser in the United Nations' Department of Peacekeeping Operations, the top policing post in the U.N.  His other U.N. posts included that of police commissioner for the U.N.'s mission in Liberia and deputy commissioner of operations for the U.N. International Police Task Force in Bosnia and Herzegovina.  He was also chief of police in Portland, Oregon, and consulted for the U.S. Department of Justice in Haiti.  He was also a member of U.S. police development projects in Rwanda and Burundi.  He came to international policing after a 32-year career with the police department of Los Angeles, California.