Before taking off you should check how works helmet and oxygen mask. It is highly necessary that helmet and oxygen mask were in a good state. That is why when there are flight preparations to this step should be driven a lot of attention as it is represented at the picture. You should feel comfortable in your helmet and oxygen mask and this way you will be able to fill all trill of the adventure travel. Sokol airbase is aiming to make you jet trip most pleasant and comfortable that is why everything should be in a perfect state even such small detail like helmet and oxygen mask.