" Sacramento Mayor Kevin Johnson on Thursday unveils his highly anticipated proposal on how to pay for a new downtown arena – the latest and perhaps most critical step so far in his often dramatic two-year crusade to keep the Kings in town.

Representatives of the mayor's arena study group say they've identified enough public and private pots of money to build a $387 million sports and entertainment facility on city land in the railyard.

Johnson himself on Friday described the effort in epic terms. Saying his real focus is on jobs and economic development, not sports, Johnson called the project potentially "the city's greatest economic opportunity since the building of the Transcontinental Railroad.""