Ensure participation of the affected population in the assessment, design, implementation, monitoring, and evaluation of the assistance programme. Conduct an initial assessment to provide an understanding of the disaster situation and to determine the nature of the response. Respond when needs of an affected population are unmet by local people or organisation due to their inability or unwillingness to help. Target assistance based on vulnerability and need and provide it equitably and impartially. Aid workers must possess appropriate qualification, attitudes, and experience to plan and effectively implement appropriate assistance programmes.