I saw this ship when it was being painted at Chino Airport, It was a Los Angeles County Sheriff's ship N968SD. When I saw it it only had the Long Beach Police painted on the tail boom. All the top cowlings and covers were removed.
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=968SD
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=28LB is reserved
http://www.airport-data.com/aircraft/N968SD.html
Walt