at aprox 1 minute into the episode, Jarod (pretending as a fireman) rescues a girl from a burning building. He is wearing an "air bottle" (tank) on his back, but he is not wearing a sealed mask, he is only wearing a clear eye protection shield over his face, but the shield is not air-tight, and can easily let the smoke into his lungs, so what is the purpose of the air bottle if he was going to use this type of mask