Aviation Commissioner Ginger Evans said Friday the city will look for a private company to cover construction costs and operate the system, but it's likely public money would go into building stations at the airport and downtown if the project moves ahead. There also might be one other station along the line, she said, if it looks like an opportunity exists somewhere between downtown and the airport to spur development and increase ridership. Evans would not offer any guarantee that additional tax money wouldn't be needed for the project.