Some companies in Russia earn their living by buying cheap old Russian army vehicles and converting them to civil engineering and construction hardware that then is being used at the various construction sites in Russia. With those it comes like, passing across a place where the new residential complex is being built a big military camouflaged tank can appear
from across a corner equipped with a hoe instead of the gun. Also, it might be handy in exporting to third world countries where the construction areas are sometimes being combined with a battle front. Such construction machinery won't be an easy target and would be able to continue digging under the light to moderate range fire.