Very cool! We need to mount those on battleships and do a Ginsu attack on enemy ships!
Water jet? More like a sand jet.

Seems unnecessary. We just fill old ships w/illegals and use them in live-fire exercises for the navy and coast guard.
three questions:
1. how fast does the robot water-jet cutter cut compared to a robot with an acetylene torch?
2. how much energy does the water-jet cutter used per foot cut vs how much energy is used per foot by an acetylene torch?
3. does the robot cutter have to be manually positioned and wielded by a worker when complex internal structural elements need to be deconstructed?
the answers to those three questions will tell you whether this whole robot water-jet scenario is economically feasible or whether they just took a picture of a robot water-cutter slicing a single small piece out of an external hull plate at dock level ...
“electrified trains”? i assume they mean all-elecric battery-driven locomotives, because ALL current locomotives are hybrid diesel-electric and have been for over 70 years ...
btw, i wonder how many tender cars loaded with how many tons of batteries will be required for an all-electric train?
Someone needs to tell Howie Wolowitz.