United Retires It's Last B737

http://www.aero-news.net/index.cfm?contentBlockId=45dd31a0-50cd-49d3-bd48-1447602f27dd

Final Flight Included Stops At Every United Hub
After a career that spanned 41 years, United Airlines has officially
retired the last of it's B737's after a final flight from Dulles
Airport near Washington, DC to San Francisco. The final flight landed
at every United hub in the U.S.