it s an all-out hunt in berkeley to find an armed suspected. we ve had drilled for this. we re very well prepared. the hospital was ready but a lot of other people weren t to be without power all day long in san francisco. tonight we re live inside silicon valley. breaking news in berkeley where police are concealed with guns drawn and canines are searching a four block area going house by house to try to find a man with a gun. someone saw the gunman around 4:30 near mckinley street and austin way. the four blocks here highlighted on this map. reporter: we re at this perimeter at mckinley avenue. i want to take you over head to