Japanese authorities encountered a setback in their efforts to investigate one of the damaged reactors at the Fukushima Daiichi nuclear power plant. Plans to deploy drones for a second day were abandoned due to equipment failure.
On Wednesday, two drones successfully flew inside the reactor for the first time, examining molten fuel debris and damages in areas previously inaccessible to robots. However, Thursday's attempt was delayed, highlighting the challenges of the task at hand.
