While Silicon Valley touts new robots that will greet you at the airport, deliver Cheetos to your hotel room or get you a pizza in a hurry, other machines have had more-serious jobs for decades.
Take Northrop Grumman Remotec's products. The robotics division of the defense contractor started life more than 20 years ago as a maker of machines that move radioactive materials around government research labs. From there, the devices evolved into bomb-disposal aids, and were sent into other situations that the military or law enforcement deemed too risky for humans.
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