At hynny, mae’r angen hwnnw wedi cynyddu yn ddiweddar. Mae’r gostyngiad hirdymor yn nifer y tanau wedi golygu ein bod nawr yn dibynnu ar ein diffoddwyr tân i ymateb i ystod eang o ddigwyddiadau heblaw am danau. Maent ar flaen y gad yn dilyn damweiniau ffordd, llifogydd a gollyngiadau cemegol. Mae datblygiadau technolegol a gwelliannau gwyddonol wedi darparu llawer mwy o offer a thechnegau iddynt, ac wedi cynyddu’r angen iddynt eu meistroli. Mae newidiadau o ran dyluniad, adeiladwaith a chynnwys adeiladau wedi creu amgylchedd adeiledig sydd, mewn sawl ffordd, yn fwy cymhleth a pheryglus yn achos tân.
Furthermore, that need has increased in recent times.  As we have seen the success of the long-term decline in the incidence of fire, we now rely on our firefighters to respond to an array of incidents besides fires. They are at the front line of road traffic collisions, floods and chemical spills.  Technological advancement, and improvements in the underpinning science, has placed many more tools and techniques at their disposal, and has increased the need to master them.  Changes in the design, construction and contents of buildings have created a built environment which is in many ways more complex and hazardous in the event of fire.