I'll never forget receiving a phone call, when I was Virginia's state fire programs director, after a very similar incident in a small-town restaurant where I knew the fire chief.
Initial reports suggested that several firefighters were injured or missing; fortunately, as in this case, everyone made it out.
There's a lot to discuss in this short video clip and hopefully we can use it, in a respectful way and not to "Monday morning quarterback" an event that could probably happen anywhere, to reinforce some lessons learned from other incidents.
There will probably be some discussion about whether this fire phenomenon was a true "backdraft" or a "smoke explosion."
Either way, it's a great reminder about how quickly fire and smoke conditions can change, exposing firefighters (inside or outside) to substantial risk.
It's also a case study for the importance of a properly staffed rapid intervention crew. Imagine how difficult it would have been to locate and rescue those interior firefighters if they were injured, or a partial structural collapse occurred.
Finally, while it's hard to be certain from the video, it appears the interior crews were (smartly) wearing full PPE and SCBA with their facepieces on.
If they hadn't done so, it seems likely there could have been significant injuries.