Sleipnir Frigg, howsoever he be covered in his white shield, and guide his tall steed, he shall in no way go safe out of Leire; it is lawful to lay low in war the war-waging god." Two of the 8th century picture stones from the island of Gotland, Sweden depict eight-legged horses, which are thought by most scholars to depict Sleipnir: the Tjängvide image stone and the Ardre VIII image stone. Both stones feature a rider sitting atop an eight-legged horse, which some scholars view as Odin. Above the rider on the Tjängvide image stone is a horizontal figure holding a
Legged Squad Support System was approximately the shape and size of a horse. A stereo vision system, consisting of a pair of stereo cameras mounted into the 'head' of the robot, was integrated alongside a light detecting and ranging (LIDAR) component in order to enable it to follow a human lead and record intelligence gathered through its camera. The initial contract for the Legged Squad Support System was awarded to Boston Dynamics on December 3, 2009. The continued evolution of the BigDog led to the development of the LS3, also known as AlphaDog. The contract schedule called for an operational demonstration of two units