Legged Squad Support System (LS3) is a four-legged robot designed to travel 20 miles on rough terrain carrying 400 lbs of load. The video shows field testing at Twentynine Palms, CA. Testing includes rough-terrain mobility, endurance, visually guided following, GPS guided maneuver, and overall reliability. LS3 is being developed by Boston Dynamics with funding from DARPA and the US Marine Corps. For more information visit our website at www.BostonDynamics.com.