This is on another level of abominations. The FBI needs to send in counter snipers who have Mil experience. Put drones with night vision and robo dogs out. Unbelievable.
They said he murdered his 3 daughters? Highly unlikely, something is up, probably bigger than all this.
Send in a Mil armored vehicle to pick up the wounded, even ones they use for banks. Doesn't anyone think? Get the drones within range of the wounded. Call in a cobra, apache, or a-10.