They say it's a limestone digger. YEAH OKAY. I'm sure that's why the Germans built a giant fucking tank-saw that could cut Voltron in half, is to mine for limestone. We never should have trusted 'em after that unpleasantness back in the 1940's.
The real question is: how in the hell did we let them get away with building the first 287? Boy, they really caught us nappin' on this one.