The more I read about this terror attack, the more convinced I am that the Keystone Kops are in charge.
If it took three hours to plan the assault, there was plenty of time to get the building plans from the county building department or the owner. The way I read it, the second restroom which backed up to the one with the jihadi in it, was separated by a partition wall - one layer of drywall on each side. It would be highly unusual for a light commercial building in Florida to be constructed otherwise as this is the cheapest way.
Knowing that, these cowboys should have thought about whether anyone was in there. The inside wall of this second restroom - the side not connecting to the jihadi’s lair - was also likely a partition wall. Drill a hole, put a boroscope and microphone in and determine there’s no threat in there. Then take a case cutter and make a hole to allow those trapped inside to escape. At the very least, they could have told those trapped in this second restroom to get down and stay down.
Of course that doesn’t involve guns ablazin’, so it never would have occurred to the blasters.
They had to burn the village to save the village. For that they’re local heroes and get on the TV.