[The U.S. Navy’s] latest weapon is an electromagnetic railgun launcher. It uses a form of electromagnetic energy known as the Lorentz force to hurl a 23-pound projectile at speeds exceeding Mach 7. Engineers already have tested this futuristic weapon on land, and the Navy plans to begin sea trials aboard a Joint High Speed Vessel Millinocket in 2016.
25% of US combat personnel could be replaced by robots by 2030:
"General Robert Cone revealed the news at an Army Aviation symposium last week, noting that the Army is considering reducing the size of a Brigade Combat Team from 4,000 soldiers to 3,000, with robots and drones making up for the lost firepower." - See article above.
US Marines training with the LS3 - which looks like the working version of Boston Dynamic’s Big Dog.
"Pfc. Marcus Beedle looks over his shoulder at the robot following him. The machine’s four legs are eagerly stamping the grass, its sensor-laden head held high. "LS3, follow tight," Beedle says to the robot, and the Legged Squad Support System—which stands taller than a dog but smaller than a mule—follows in the exact footsteps of its Marine Corps handler." (via Popular Mechanics)