takashi sato is a reactor inspector who no longer works at the plant. >> (translated): i wasn't worried about the condition of the plant. i had always thought nuclear power was safe. but in the end, the plant wasn't safe, was it? >> narrator: just up the coast, the fishermen of fukushima knew what was coming next. >> (translated): it's always been said on this shore, the tsunami will follow the earthquake. i went straight to the harbor and headed out to sea. >> narrator: yoshio ichida wanted to save his boat. he was racing straight into the biggest tsunami waves to strike japan in hundreds of years, hoping to crest them before they broke. >> (translated): they were like mountains. we went over three waves that came directly from the east. they were about 15 meters high. it was like this. >> narrator: the biggest of the waves was more than 40 feet high and traveling at over 100 miles an hour. >> (translated): when i looked back to shore, there was a strange ocean mist. i knew something bad was happening. >> narrator: at the nuclear plant, a worker was filming as his co-workers fled to hi