Ever since September 11, 2001, when New York's first responders could not reach each other, LA County and its many cities have been working on a plan for police, firefighters and hospital personnel to share a communications system. Now the Regional Interoperable Communications System oversight board has decided to scrap a proposed contract with Raytheon and start all over again. That means deadlines might not be met for $283 million in federal money, a big portion of a total cost estimated at $700 million. Sheriff Lee Baca is a member of the oversight board.