Fire Drills
I have got to say, that having been through the modern, gas fired trainer at Pheonix and the old oil fired ones at Horsea, there is no comparison. The heat from the oil fired units was intense and the fire walk quite a scary, but confidence building event. The whole experience of breaking apart wood fires and watching the oil/water "fireball" go above my head was quite incredible. Health and safety and all that, with a lower carbon footprint, but at least you knew waht a real fire was like.
A decent analogy would be, I suppose training with blanks as opposed to live ammo. Listening to those whistles above your head would concentrate the mind. Havinig towed a target in the past and watched the tracers go by...............................!!!!!!!!!!!!!!!!!!!!!!