japan's national police agency or mpa mentioned the lessons learned from investigating the attack in report issued the following year. it pointed out police had not thought about the use of highly toxic sarin gas in crimes and lacked expertise. afterward chemical terrorism units were formed in nine prefectures. the mpa also set up a forensic section on chemical warfare agents at its national research institute of police science. one month after the attack the nation's first law was enacted to ban possession of the raw materials used to manufacture sarin. a japanese counterterrorism expert noted police have made great strides in anti-terrorism measures. >> translator: young people don't know anything about the assault. i think they need to understand what really happened. we should explain what the chemical terror attack was like. >> itabashi says a full review of the subway attack is needed to help educate future generations. >>> engineers decommissioning japan's fukushima daiichi nuclear plant have been given a clue to help solve a big mystery. they need to remove melted fuel from i

search because her disappearance had not met the criteria for the washington state missing vidry or e mpaat is triggered when a person is missing and believed to be in danger because of mental disability. the disappearance did not follow or meet the criteria. she was not - didn't have a mental illness. she had depression issues. may have been drinking at the time. that is not mental illness. >> reporter: when you say mental illness, what do you mean from your position? >> we were called four times, redman one time. we are trying to determine does she meet the criteria, no, she does not. gech if she did. nothing could be done to help. there was no vehicle, nothing to flash on a billboard or a road sign. a bank account, but by this ravine. >> misty upham's death is a high-profile example. native american women are murdered or go missing at a higher rate than other ethnic groups. at some reservations women are murdered at a rate 10 times higher. concerned that officials didn't consider the disappearance suspicious, charles turned to family and friends. >> we went into bush. >> reporter: it f