stakeholders of business owners and residents and that is going to involve studying the demographics of that micra community to make sure that goes fairly. supervisor kim: principles or values you would prioritize that would guide you through your decision making process on the redistricting task force? >> transparency, communities of interest, making sure that not only comply with the law on the issue of minority groups, but we also don't just do it because it is legal, but because it is fair and equitable. i have actually begun to read through the packets that the supervisors received. i downloaded it off the website and it is going to be a challenge, a question about it. one of the concerns a lot of people are making about the redistricting is the shrinking african-american population in san francisco. we only have one african- american supervisor now and that is in district 10. how do we insure the african- american community in the district and continues to have a strong of ways so they can elect one of their own? it is going to be a tough job. there is no way around it. i'm committed to maki

we are looking for micra facial anomalies. the way people behave with facial movements they have as they approach the checkpoint, the spot programs resulted in more than 2000 arrests since 2000 arrest -- since 2006. the science is based upon micro facial anomalies and the way people look and that is what they are trained to. it is more than random. you're looking at the crowd and looking for people who would have somewhat aberrant looks. >> we're about $1 billion into this. is that worth of the money? >> i think that the investment in the behavior observation certainly makes sense. other things we're doing are limited to detection of items. i think 10 years after 9/11 with the attempted attacks that we had during the next exposure of time. we reached a conclusion that we need to pay more attention on people rather than just on items. the observing behavior is one of the basic tools that can be used at the airport but it is only one single tool in a much wider and more complex strategy. >> what kind of technology is involved in