This paper studies the phenomenon fiery impact, the importance of doing the exercises in simulators fiery attack in which firefighters can get to know the „enemy“ face to face. Some firefighters attending these exercises and go through simulator fiery attack actually first experience with fire indoors. Each fire extinguishing is demanding, responsible and dangerous job which of a firefighter requires knowledge, skill and mental stability. This particularly applies to fires in enclosed spaces where there may be a certain kind of fiery impact (flashover, backdraft, rollover...). On this occasion, his inexperience firefighter caught with fiery impact flame usually „pay“ the highest price, their lives. The above shows that the provision of conditions for practicing in simulators fiery impact is vital for firefighters. In them, in terms of the closest real, is teaching how to recognize the signs of a fiery impact and how to prevent them, following the development of the fire and the fiery impact, trains movement and orientation in space affected by the fire, gains experience and increases the sense of belonging and faith in the team colleague.