Summer means trouble in our forest lands. Hot, dry weather brings fire danger because it makes the woods dry. When the forests become dry, fires start easily and spread Careless people drop lighted matches and cigarettes. Soon forest fires destroy thousands of acres of woodlands. Summer means that Uncle Sam will give 350 young men the job of smoke jumping to prevent forest fires. Smoke jumpers are firemen who jump from plane They fight fires caused by campers or by The smoke jumper's job is to break the fire triangle.'' The three sides of the fire triangle are heat, fuel, and air. When firemen remove any one of these three things, the triangle is broken. Then the fire goes out. Most of the time the smoke jumpers try to remove the fuel from the triangle. They do this by cutting a line, or fuel break, around the fire. They use power saws, axes, and shovels to remove grass, needles, and other forest fuels. When all the fuel has been removed around the edge of a fire, the triangle is broken.