Final answer:
Firefighters commonly create a firebreak to control wildfires, which involves making a gap in vegetation to stop the fire's spread. Other methods like using flamethrowers or explosives are more exceptional and like urban legends.
Step-by-step explanation:
When firefighters encounter wildfires, they employ a variety of methods to control and extinguish the fire. Creating a firebreak is a common tactic used to prevent the spread of wildfires. A firebreak is a gap in vegetation or other combustible material that acts as a barrier to slow or stop the progress of a fire. It can be made by manually removing vegetation with tools, using controlled burns to clear the area, or even by employing heavy machinery to clear a wide swath of land.
Options such as using flamethrowers, calling in the National Guard, or blowing up a mountain might sound like they're from an urban legend or a movie scene. However, in rare and extreme cases, explosives have been used to help create firebreaks or remove burning debris. Still, these are not standard practices and fall into the category of extraordinary measures.