According to the official notice, which was issued by the Federal Aviation Administration on Thursday, drones equipped with weapons and other dangerous substances may pose a significant threat to the security.

The notice emphasizes that equipping of drones with a flamethrower or other “dangerous weapon” breaks Section 363 of the 2018 FAA Reauthorization Act and may result in penalties of $25,000.

But if a drone operator has an intention of operating a weaponized drone—for the reason of burning trash off of high-voltage wires— he can apply for “special authorization from the Administrator of the FAA”.