Perhaps these big cities will break into zones like Baghdad did after the start of the Iraqi war.
Bhaghdad had "Sadr City" controlled by a Shia militia loyal to a particular religious leader. There was the "Green Zone" controlled by the Americans, essentially a heavily fortified base in the center of the city with controlled access. There were Sunni Zones, there were more or less open neighborhoods.
The "Battle of Houston" could end up like Stalingrad, with two armies battling in the ruins for years for a completely Pyrrhic victory.
We can all have ideas, but in the immortal words of Mike Tyson: everyone has a plan until they get punched in the mouth
Cheers!
I hated Tyson, and then I learned to like the guy (just like Ali). He is correct on what he said, for the most part. Thx.:-)