I'm all for developing machines that can do what we consider too dangerous for our troops to do. Ariel surveillance, bomb disposal, carrying heavy loads, but where do we draw the line between giving it too much "brain" and too much "muscle"? Do I want a robot fighting my enemies? Hell, yes!
Not many people realize it, but a super volcano rests within the continental United States. Yellowstone National Park has within its limits the caldera of the volcano's previous eruption, and it's still active.