The International Space Station (ISS) Expedition Seven patch consists of two elliptical orbits which evoke the histories of the two space programs from which the crew is drawn. The Russian and American flags are intersecting, representing the peaceful cooperation of the many countries contributing to the ISS. Two stars indicate the Station's goals of contributing to life on Earth through science and commerce.
http://spaceflight.nasa.gov/gallery/images/station/crew-7/html/iss007-s-001.html
NASA