country. The use of armoured vehicles to provide additional security to members and staff of the commission/mission may be necessary. Secure accommodation facilities may be scarce in certain locations, preventing the commission/mission from staying overnight. Telephone communications and Internet access could be disrupted during the conflict and satellite phones may be necessary. The commission/mission will have to establish evacuation plans, including secure and safe transport of information gathered, should the security situation deteriorate and require members and staff to leave the country or region rapidly. 5. EVALUATION AND ANALYSIS OF INFORMATION Evaluation and analysis start with the first pieces of information collected in any investigation, especially background information that will assist in identifying the key events or issues for investigation. The evaluation will consider the relevance of the information to the subject matter of the investigation. It will also look at the reliability of the source and the validity or truthfulness of the information. The evaluation also has to test the probity of the investigation, that is, assess the integrity of the process of collecting information, which could have consequences for the investigation as a whole. It is important to collect information without any bias, with the investigators exercising the utmost independence and impartiality. Continuous analysis of information is necessary to ensure that any gaps in information are identified and remedied. Analysis also helps to identify and correct any weakness in the investigations methodology before it affects the value of the information collected, for example, if an investigator is not obtaining the necessary consent from victims, witnesses and other sources to include the information they provide in the public report. Analysing information throughout the investigations will ensure that relevant information is collected and corroborated. Whatever the standard of proof adopted (see subsect. 7, below), the commission/mission must ensure that the incidents or events on which it is reporting have been adequately corroborated.58 While investigators should aim at corroborating any given piece of information by obtaining concurring information from two other independent and reliable sources, this may not always be necessary or possible. Information from a reliable primary source may need corroboration by only one additional independent and reliable source, which may include the investigator’s own direct observations. For example, when an interviewee alleges torture, the investigator’s assessment of the reliability of the source and the viewing and noting down of scars or injuries consistent with the account can provide corroboration. 58 Training Manual on Human Rights Monitoring, Professional Training Series No. 7 (United Nations publication, Sales No. E.01.XIV.2), chap. VII, sects. E–F. GUIDANCE AND PRACTICE 59