A four-legged inspection robot, can carry out work where people cannot go. The robot can be deployed to navigate hard-to-reach areas. The legged robot can negotiate stairs, uneven terrain, and is able to avoid low-lying obstacles. It carries a smaller robot which it can then deploy for additional remote inspection. The larger of the two robots weighs 143 pounds (65 kg) and stands 3 feet, 5 inches (106 cm) tall. It can operate for up to two hours on its battery, and has a walking speed of 1 km/h (0.6 mph). The smaller inspection robot weighs 4.4 pounds (2 kg), and has a battery life of about one hour. Both robots will be operated over a wireless network. The four-legged robot can climb over debris and venture into radiated areas off-limits to human workers. Its wireless network can be controlled in high radiation, automatically seeking better transmission when reception becomes weak. It can access places that rolling bots cannot. But rolling is still a useful skill, so it carries a second robot on its back that can go off on its own after being lowered down on a little crane.