What on earth are they doing ?

Strong work. I don't think the hole in the roof was necessary based on what the video showed, but solid work.

Thank you for your videos, they've been a very helpful resource for me and my class during our first instructions on indoor/industrial fires.(module name might be different as we are not from the USA). Keep up the good work and good luck.

These videos make it so evident that going around busting windows does nothing but feed the fire with fresh oxygen. Have to be more tactical these days. Especially with modern fire loads