My first thought is I hate instant experts that have never served a day in the occupation a that is being sued. In some cases I'm 100% a fan of go-get them.
In others, there's a lot more then meets the eye as most of us know on this forum. Just because a certain action(s) occurred, doesn't mean that it was willfull destruction. It sounds great that theres book and At a fire a commander of some rank stands there and says gather round my little firefighters while I read you a story from the good book of fire suppression written by Dewey Cheatum and Howe. That lasts all of 5 minutes if your lucky.
The best analogy of a fire I've personally been to, that was smaller but a similar situation, was a plastics manufacturer that made plastic parts and hoses for irrigation sprinklers etc. We got the call at 801 am. Shift change. And left at noon the next day. After the fire I went out and walked thru what was left of the bldg with our fire Marshall and state fire marshall. and learned a lot. Even if the bldg had sprinklers, it wouldn't have mattered. The cause of the fire was a single large sodium vapor light, same ones that are at every sports stadium and most big box bldgs I've seen, failed, over a rack of plastic parts. When they fail, they fail at over 2000 degrees. The bulb set the top of the rack on fire which climbed the ceiling, rolled over the next rack and blew the next bulb in line which set that rack on fire. And so on down the line. Eventually the fire filled in the unburned racks with burning ones. Which complicated things. The bldg was irregularly shaped to begin with, with multiple doors and bay doors down both sides. With offices and break rooms scattered throughout.
We had to open every door. Why? Because the bldg is not empty until we say it is. Another reason? It was the only way to find the fire and get infront of it. Eventually we did. With 2 RAM guns and a deck gun.
Going back to the Walmart fire, with the fire starting during daylight hours, when most people were in the bldg, I can see why doors would be opened. Some one has to make sure the bldg is empty. And get in front of the fire.
Especially after being in my local Walmart with my then 4 year old, that apparently had an electrical fire, while we were in the bldg. Im not impressed with there emergency procedures. If your ever in a Walmart that is being evacuated, it's every man woman and child for themselves. Don't rely on the staff.
I'm not condoning what the ic did, but I'm not condemning them either. I wasnt there and dont want to 2nd guesd them. But i do want to learn frkm them. I think there's a lot more to this story that we don't know, and blame is being pushed anywhere it can.