US marines test robotic mule at RIMPAC, Hawaii
14 July 2014 Last updated at 13:35 BST
US marines have tested a new robotic mule at the world's largest international maritime warfare exercise in Hawaii.
The Legged Squad Support System (LS3) is operated by a sensor strapped to a human foot.
Military footage shows Lance Corporal Brandon Dieckmann fitting the sensor to his boot, before LS3 follows him across a field.
The Rim of the Pacific (RIMPAC) exercise takes place every year at the Kahuku Training Area in Oahu.