It would be real interesting if someone could post their observations on just what the armor and associated troops are doing:
Are they going in and out of buildings or aiming cannon at them?
Are there discernable fire zones?
Do those zones point generally outward(a) from a core facility or (b) toward outskirts of the city?, or inward (c) toward a salient facility or area or (d) from outskirts to city core?
Are they setting up check points/outposts, or decontamination centers...or compounds?
Are they running around in bizarre suits and/or gas masks?
Or are they just buying souvenirs and trying to meet girls?