It’s an excellent summary of an urban nuclear detonation. And here’s the full report if it interests you.
At 10-kT (equivalent explosion to ten thousand tons of TNT), this is either a “suitcase” nuke scenario or a relatively crude terrorist-designed device.
People tend to make over-assumptions about nukes. This bomb wouldn’t obliterate a large town, much less a metropolis. Some people within deep structures would survive even in the devastated zone. Of course, if they came stumbling out immediately afterward they’d probably die a miserable lingering death from fallout, rather than a swift one from the blast.
Western civilization is in no danger from terrorists, even if any of us can be slain individually. Society-threatening nukes aren’t suitcase weapons, they’re thousands of bombs thousands of times more powerful:
That was 57,000x the FEMA scenario. Here’s a quick guide to the difference, the comparative fireballs:
A Note that that is just the fireball. Don’t think anyone is maintaining a monster like that today, though. H-bombs, not Muslim terrorists, are the inspiration for Dr. Strangelove. An event like this scenario is horrible beyond words, but our only existential danger is giving unfettered power to our governments.