<P> A fundamental advantage of such an appliance is to accommodate the many different types of communication equipment needed at major incidents . In addition to the wide range of radio frequencies used, fire chiefs often need to communicate via landlines and send and receive information via satellite links and CCTV of the ongoing situation . </P> <P> The command vehicle can essentially be used as an on - site conference centre for command personnel, mapping and planning firefighting operations and booking - in and directing crews as they arrive . </P> <P> Water Carriers (WrC) are tankers that are used to provide vast volumes of water to locations that may not have a nearby hydrant or open water supply . In some Fire and Rescue Services they also double as Foam Tenders . </P> <P> Foam Tenders (FoT) carry large amounts of foam to be used at incidents where water is ineffective or cannot be used to tackle a blaze . They may take the form of a tanker, or a lorry carrying foam packets or barrels . In some Fire and Rescue Services, Water Carriers serve as Foam Tenders, by dumping their regular load of water and replacing it with foam . </P>

Where do firefighters get their water from uk