An article about some advanced technologies being developed. The most interesting to me is VISIBUILDING which is a kind of mechanized clairvoyance that allows soldiers to look through walls and see enemies.
The VisiBuilding program will address a pressing need in urban warfare: seeing inside buildings. Our troops are increasingly being deployed in urban areas, where they no longer have the benefit of dominance in surveillance and reconnaissance once the adversary retreats indoors.
Another program recently launched at DARPA is 'Harnessing Infrastructure for Building Reconnaissance' (HIBR), a capability that translates VisiBuilding into practical terms: DARPA believes that 'opportunistic sensing' could be a practical approach to 'guess' such interior structure, using exterior observations.