Yeah this didn't happen. If someone is cracy enough to practice with holes filled with glass on fire why trust them at all about being cracy in the first place?
Erm, if you have 18 guys to spend on training, you also have some empty bottles or access to a place where there are more empty bottles.
Whether crazy people are actually crazy enough to literally do what a LLM gave them as a action sequence from movie inspiration - I have no idea. But I doubt it here.