iRobot may still be best known as the creator of the homely Roomba vacuum-cleaning drone, but savvy readers will know the company's endeavors span a pretty broad range of robot-related activities. One of those has now borne fruit in shape of a multiyear agreement with the US Navy for the provision of "portable robotic systems" that can identify and dispose of explosives while also performing a bit of reconnaissance work in their spare time. The announcement doesn't tell us the particular model(s) or number of bots that will be provided, b