Chicago-area RTA: United running 'sham' business - Article Photos 3/4

This undated photo provided by the Regional Transportation Authority in Chicago shows a list of businesses in a small office building in Sycamore, Ill., including United Aviation Fuels, Corp., a subsidiary of United Airlines. The RTA filed a lawsuit Monday, Jan. 14, 2013, alleging that United Airlines has been falsely claiming to buy jet fuel out of what it calls this "sham" office in rural Illinois since 2001 to avoid paying tens of millions of taxes in Chicago, where it says the purchases are actually being made. (AP Photo/Regional Transportation Authority)