For any emergency services where the level of professional expertise of the rescuers is often a fine dividing line between life and death, it is essential that those involved in the action be highly trained and proficient in the field. Nowhere is this more applicable than in the case of fire fighters who have to face various dangerous situations in their line of duty and yet be fully prepared for any eventuality. It is therefore necessary that they be trained on fire simulators that duplicate real life situations that they have to handle. In general, fire fighters training is always monitored closely by seasoned and experienced supervisors on machines that are advanced, high-tech and most importantly safe. The fire caddy is at the top of the list of such machines used. There is a base unit or stainless steel platform on which different types of fires can be set up. The rest of the unit below includes electronics which are hermitically sealed so that water and fire extinguishing foam cannot damage it. There are controls with which the size of the flame and gas pressure can be adjusted by the trainer as per need. The whole fire scene simulator is mounted on wheels for easy portability. One of the most effective fire simulators is the one that deals with liquid fires. The machine is so designed that propane or butane gas bubbles up though water and ignites on the surface. This is exactly what happens in real life too. While the trainees are at work learning how to extinguish this type of fire, the trainer can control the extent and height of flame through a remote control that is attached to the gear with a 32 ft long cable. The gas tubes in the caddy can be easily filled with the bottled gas remaining in the tube. Thus, there is no need to fill gas when it is ignited and when training gets under way. Fire scene simulators are not limited to these two machines only, there are a host of others that help fire fighters become the tough men that they really are. Other simulators teach them how to deal with fires in trash cans, PC monitors, grease pots, electrical cabinets and waste paper baskets amongst others. Without these simulators, fire fighters would definitely not be half as efficient as they always are.