Forest fires are large uncontrolled fires occurring in the forest. They are caused by nature or human activities. In the summer, when grass and plants are dry, they become easy to catch fire. If someone carelessly drops a lit cigarette or forgets to put out a campfire, fires can be started. In addition, fires that are caused by natural causes are started by lighting, volcanic eruptions or sparks from falling rocks. A strong wind can help a fire to spread and move quickly. Forest fire is really hard to put out or control. They can be enormous in size and quickly change directions. However, there are techniques that firefighters use to control forest fires, which are firebreak and airdrop. The first way is trying to get rid of fuel (grass, leaves,…) and the second is dropping water or chemicals on fires from the air. Billions of dollars is spent every year fighting fires in America. We all need to be careful to prevent the unexpected forest fires.