Although not visible in this picture, the two-seat Viggen has a unique tandem cockpit with periscope for a better view from the back seat. A relatively small number of two-seaters was built and this example is one of few that has been preserved. Its cockpit is covered here to protect the glass from colouring by the elements. The excellent Flyg- och Lottamuseum in Optand has 37803 on outside display.