Simulating Chicago and Arizona

"accidently"

When we traveled to South Korea to install new air combat targeting systems, we had to scrub the database of anything that represented targets inside ROK boundaries.

Since we were also providing the same technology to Japan, it was prudent that we not divulge to S. Korea that Japan has the ability to plan strikes against Korean targets.

Korea still holding a major grudge after WWII.

Many US and especially International Coalition Forces exercises use notional (fictitious) location names and targets so there's no feelings that the "enemy" in the war game is a real country/state/group.

Urban warfare has been a "thing" since before the movie "Blue Thunder".  This is such Fake News.  It only gets attention because "ICE".