Whatever that hits is toast! The Abrams M1 battletank can fire these 120mm rounds up to 4,000m, traveling at one mile per second.

Boston Dynamics, creators of the amazing BigDog robot have topped that with the development of PETMAN (Protection Ensemble Test Mannequin), a biped robot that will aid in the testing of protective clothing for soldiers. We like the way it recovers when kicked, and how they've bought it trainers.

BigDog, the Boston Dynamics robot gets put through its paces in this demonstration of its balance and physical prowess