Our local fire department had an open house to show the public their facilities and equipment. The mostly volunteer force gathered at their training facility dressed in all their gear.
The facility has metal structures with multiple floors and pre-arranged situations in which they can practice safe procedures for a wide variety of rescues.
One structure had this wood and straw arranged to cause a lots of smoke for one of their demonstrations. The blackened metal walls show the facility had been used many times before.
Included was a demonstration by the firefighters of how to put out a car fire. For practice, they have a burned out shell of a car rigged with LP gas so they don’t release toxic chemicals from a different car each time. A 5 min video of their program is at the bottom of this post.