practitioner may attend different kinds of emergencies. Advanced Paramedics Scottish Ambulance Service Advanced Practitioners in Critical Care (APCC) are based at Raigmore Hospital, Newbridge Ambulance Station in Edinburgh and Glasgow Airport. They are considered a Yellow level response in relation to the trauma network. Advanced Practitioners in Urgent & Primary Care (APUC) are located more widely across Scotland. Specifically at the following ambulance stations: Lerwick, Kirkwall, Stornoway, Benbecula, Lairg, Inverness, Lochcarron, Elgin, Aberdeen, Oban, Pitlochry, Callander, Perth, Dundee, Campbeltown, Paisley, Glasgow (Castlemilk fire station), Kilmarnock, Hamilton, Stranraer, Newton Stewart, Dumfries, Biggar, Melrose, Prestonpans, Edinburgh, Livingston, Falkirk, Stirling, Dunfermline, Cupar and Leven. Ambulance Control Centres The Scottish Ambulance Service also maintains three command and control centres in Scotland, which facilitate handling of 999 calls and dispatch of ambulances; a further 350400 staff employed as call handlers and dispatchers fulfil this role across three locations: Edinburgh, Glasgow and Inverness. These three centres (which, through use of software, operate as one integrated unit) have been in use since 2004 and handle over 800,000calls per year. The Advanced Medical Priority Dispatch System (AMPDS) is used for call prioritisation, and provides post-dispatch instructions to callers, allowing medical advice to be given over the phone, before the ambulance arrives. Clinical staff are present to provide clinical oversight and tertiary triage. Co-located with the Ambulance Control Centres (ACC) are patient transport booking and control services, which handle approximately 1million patient journeys per year. Role within the Scottish Trauma Network The Scottish Ambulance Service coordinates the pre-hospital and inter-hospital transfer elements of the Scottish Trauma Network. This response comes from the Scottish Ambulance Service and a number of partner agencies. These are sometimes categorised as Red, Yellow and Green resources; of these, Medic One and BASICS Scotland are registered charities. Volunteer Resources BASICS Scotland The service also uses a number of volunteer responders in conjunction with BASICS Scotland and the Sandpiper Trust. These responders are doctors, nurses and paramedics who volunteer their time to respond on behalf of the ambulance service and help the sick and injured. Equipment is provided to these responders by both the ambulance service and BASICS Scotland, with assistance from the Sandpiper Trust. These responders may be able to offer enhanced "Yellow" skillsets and advanced interventions to assist the other emergency services. Such skills offered by BASICS Scotland responders may include: endotracheal intubation, procedural sedation, advanced analgesia, nerve blocks, cardioversion and thoracostomy with or