In my agency we use them for surveillance...military grade. Detect at 5 km, recognize at 2 km, and ID at 1 km. Night, day, rain, shine.
These are uncooled. The cooled variety would double all those ranges...but 3X + on the price and not necessary for us.
I know they are adding laser to the MK-38, and would not be surprised if there was not radar control from their local surface, and maybe air radar...but not sure about it.
I field tested a new hand-held thermal imager and was very impressed. I could easily see the differences in size of a 5.56 over a 7.62 round, carried in pockets, at night. up to about 20 feet away.
Very crispy image targeting up to 300 yards at night, in the rain, easy to see if weapons or explosives were being carried under blankets, whatever.