This merit badge pamphlet gives Scouts all of the information they need to earn this merit badge - from the elements of fire to how to keep themselves and others safe in event of a fire.. Fuel + oxygen + heat + chain reaction = fire! But just take away any one of these elements (known as the fire tetrahedron) and a fire won't survive or start. Using this pamphlet to earn the Fire Safety merit badge, you'll discover fascinating facts like this one, plus lots more about fire and fire safety.