And to add to the point of their inexperience as green horns, maybe for instance, one of them is a school teacher, another is a blogger, another is an accountant, etc. so none of them have a clue of how to stop a forest fire.
And, maybe this town that they are in is a small town where everyone knows everyone, and so they know of what this ex-firefighter did that has made him such a disgrace. This could create tension since the one person who actually knows what on Earth they’re doing, no one wants to listen to them.
You’re writer’s voice and your characters and the relationships between them are your unique selling points.
Remember, screenwriting is a business of which you are the sole owner. While film making as a whole is a collaborative effort, screenwriting itself is a sole proprietorship, of which you are the sole owner. Your script is the product, and your logline is the main advertisement of that product. In order to make your product (your script) stand out, you must highlight what makes your story different, unique, and interesting. In this case, it is the characters that I would focus on since it seems that you have great potential for some interesting character dynamics and development here.
Obviously, these are just suggestions, and you don’t have to use them if you don’t want to. However, you are more than welcome too!
I hope that helps! 🙂