How has the Physics of heat been utillsed by fire figthers?

Explanation

The fire fighters have to enter burning buildings to save lives and property. For this the knowledge of Physics of heat for them plays an important roles because.
(i) Knowing the types of fumes and radiations emitting from the present fire will help them to decide the type of spray (only water spray or fine mist spray) to be used to control the fire.
(ii) The type of clothes to be used during the fire fighting so that they are not harmed by fire.
(iii) The type of instruments to be used during spray and their placing to control the fire.
(iv) the best technique to be used to bring out the person trapped in fire.