That shrill noise in the background is a personal alarm we wear on our turnout gear. If we are idle or if something happens to us inside a building, the alarm goes off to let our fellow firefighters know that we are in trouble. White smoke is a good thing btw, that means the fire is getting put out.
That shrill noise in the background is a personal alarm we wear on our turnout gear. If we are idle or if something happens to us inside a building, the alarm goes off to let our fellow firefighters know that we are in trouble. White smoke is a good thing btw, that means the fire is getting put out.