This is the Australia Forum so I assume that's where they are!So you're just looking for streaming of forest fire fighter observation towers? You don't have a location on your profile.
Look up the state of New Jersey, they have several chattels that they are streaming of the New Jersey Forest fire fighter service. They are on VHF High repeaters.
I listen to them on my radio. They report daily weather, and respond to fires along with the local fire departments in forestry areas. They are under the auspices of the Department of Environmental Protection. Quite a lot of information and Maps if you look up the New Jersey Forest firefighter service.