emergencies fire brigade fire control fire hydrant fires hydrant red three headed double-headed emergency fire-brigade fire-control fire-hydrant firemen prepared pressure red-and-white safety water water-pressure white accessible background foliage locked Padlocks painted-red secure secured security advice aid alert announcement assist assistance availability available aware awareness caution communicating communication concern directions equipment extinguish extinguisher fire fire-extinguisher firefighting help information informing location observant observe risk risks sign signs blue foam limitations limited boost booster distinctive hope identification indentifying indication indicator informative lettering maintain maintenance nearby notification notifying surface cartridge danger fire extinguisher protection safe stored-pressure