NEW ORLEANS (AP) — The Latest on the trial of a former BP supervisor on a pollution charge in the 2010 oil spill (all times local): Court proceedings in the trial of a Deepwater Horizon rig supervisor began before the jury arrived. Federal prosecutors and lawyers for a Deepwater Horizon rig supervisor are ready to tell jurors what they expect to prove as 65-year-old Robert Kaluza is tried on a misdemeanor pollution charge from the BP oil spill. Prosecutors say Kaluza and fellow supervisor Donald Vidrine botched a "negative pressure test" and missed clear signs of trouble before the blowout.