Two robot dogs are in a sandy area while a crowd looks on

Two robot dogs are in a sandy area while a crowd looks on. One of the robots is slightly larger than the other. Both are black and quadrupedal. The larger robot is standing still with its head high, while the smaller robot is crouched and appears to be examining a piece of wood on the ground. A crowd of people stands behind the robots, many of whom are holding up their phones and taking pictures. There is a tall, red brick building in the background. One of the people in the crowd is wearing a US Army uniform.