Apparently, the shooter is dressed in body armor. He tried to get past security at the FBI office, then exchanged gunfire with the agents there, then fled. Soon after, he was chased by the state police and is now pinned down in a corn field.
I suppose this could be connected to the FBI raid of Mar-A-Lago, or it could be just a nutjob. I guess he’s a nutjob either way.
Since we have limited info yet, going back to the nail gun assault question:
Not a perfect source, and I’m at work so not going to do a deep dive, but
Objects other than the obvious guns and knives can also be wielded as deadly weapons. For example, broken bottles, dogs, power tools, gardening tools, blunt objects, and boats have been used in the crime of assault with a deadly weapon.
So I’d say that most nail guns (.22, electrically or pneumatic powered) would probably fall under power tools, so I’d rate it as likely qualifying for assault with a deadly weapon.