Security and the magnetometers have video information is best answered by ups. Jimmy lam was known for nonviolent offenses. Theres a question of what motivated him to shoot his victims. Some of the incident was captured on camera and police have interviewed over 100 witnesses. Many said he walked by employees and shop for people during a meeting and then targeted a 46yearold outside. After the shooting inside the building, numerous employees fled the building. Mr. Lam was observed on video calmly walking outside the building as well. Once outside the building, mr. Lam walked up to michael who was standing on the corner of 17th and san bruno avenue and without speaking to him, mr. Lam shot him alterable times. Reporter back here live, the Police Department says they are morning with the ups family. They think the department for Quick Response and keeping the loss of life to a minimum. So they are saying he targeted those three victims. Are they saying why . Reporter the not sure why but