B Drone is an earthquake rescue system designed to optimise the first 72 hours of search time. This high-risk period, also known as the ‘Golden Time,’ is largely responsible for the high mortality rates of both victims and rescue operatives. The B Drone system proposes the use of unmanned aerial drones to carry out these hazardous initial searches. The drone-in-drone system pairs each mother drone with a smaller interior drone, deployed to navigate small gaps and cramped spaces, unreachable or dangerous to the human worker. With real-time GPS, a built-in 4K camera and an infrared heating sensor, the B Drone increases the chances of victim location, while reducing unnecessary risks to rescue workers.