Fire officers plan, organise, direct and co-ordinate the activities and resources of a specific physical or functional area of a statutory or private fire brigade/service and the resources necessary for the protection of property at fires within a salvage corps area. Ambulance officers plan, organise, direct and co-ordinate the resources necessary for the provision of ambulance services. Prison officers (principal officer and above) plan, organise, direct, and co-ordinate the activities and resources necessary for the running of a prison, remand or detention centre. Customs officers plan and direct the work of customs, excise and immigration staff in the monitoring and inspection of goods and persons crossing national borders.