straight but has support beams, a tube to feed in oxygen, the light fittings and the dirt was wheeled out on trolleys. it must have been a mammoth operation. you get an idea how cramped and dichlt it would be to move through and how long it would have taken the hundreds of people to crawl the hundred of feet out. >> that's just amazing. >> according to several published reports, two dozen police officers and the head of kandahar's main prison have been arrested now. it is suspected that they were actually involved in that prison break. to japan now, the latest on the nuclear crisis there. for the first time since the earthquake and tsunami hit back in march, workers have gone back inside the reactor building of unit one at the daiichi nuclear power station. these pictures were taken by those workers. monitoring devices show radiation levels in the building now are off the charts. workers will spend the next four or five days installing six ventilation machines.