BAKER TEST: According to Wikipedia Operation Crossroads was a series of nuclear weapon tests conducted by the United States at Bikini Atoll in mid-1946. It was the first test of a nuclear weapon after the Trinity nuclear test in July 1945. Its purpose was to investigate the effect of nuclear weapons on naval ships.
Cameras (now this is amazing)
Radio-controlled autopilots were installed in eight B-17 bombers, converting them into remote-controlled drones which were then loaded with automatic cameras, radiation detectors, and air sample collectors. Their pilots operated them from mother planes at a safe distance from the detonations. The drones were able to fly into radiation environments, such as Able’smushroom cloud, which would be lethal to live crew members.
All the land-based detonation-sequence photographs were taken by remote control from tall towers erected on several islands of the atoll. In all, Bikini cameras would take 50,000 still pictures and 1,500,000 feet (457 km) of motion picture film. One of the cameras could shoot 1,000 frames per second.
Before the first test, all personnel were evacuated from the target fleet and Bikini Atoll. They boarded ships of the support fleet, which took safe positions at least 10 nautical miles (18.5 km) east of the atoll. Test personnel were issued special dark glasses to protect their eyes, but a decision was made shortly before test Able that the glasses might not be adequate. Personnel were instructed to turn away from the blast, shut their eyes, and cradle their arm across their face for additional protection. A few observers who disregarded the recommended precautions advised the others when the bomb detonated. Most shipboard observers reported feeling a slight concussion and hearing a disappointing little “poom”.