Well, as you can see by now the garage is almost completely gone and the interior of the house is fully involved.
Even at this stage, they have enough water capacity to put the fire out, but they will just keep practicing with the hoses and let it burn.
After a while, it was time to just let the fire go and let it finish off the house.
A person gets a funny feeling about watching somebody's house go up in flames, but you have to remember it is only PRACTICE. It was going to be destroyed anyway.
After the flames died down and most of the smoke had cleared, I found the following in the ashes.