[Milsurplus] Heavy Tripods?

[KD7JYK DM09]

Over the years, I don't know where, I have seen photos, of heavy military
tripods for mounting various equipment.  These are OD or black, telescopic
legs and for the feet, large heavy disks about 6" across, some with spikes
in the center.  They are very heavily built, I imagine they could supoprt a
few hundred pounds.

I've tried to find a picture of such a tripod on google over the years, but
haven't had any luck.

Can anyone suggest a model number to look for or know of a website where I
could find a photo?

Thanks,

Kurt