Image above: Even before it officially opens to the public, AirVenture 2007 attracts hundreds of sightseers who fly in, camp or work at the air show. Credit: NASA/Kathy Barnstorff

Image above: A NASA F-18 that's used as a support and chase aircraft at NASA's Dryden Flight Research Center was towed into place at AirVenture 2007 in Oshkosh, Wis., so visitors could check it out. Credit: NASA/Kathy Barnstorff

Image above: Visitors to the NASA pavilion at AirVenture 2007 can take their picture as an astronaut. Credit: NASA/Kathy Barnstorff

Image above: Darlene Mendoza, a member of the SOFIA team at NASA's Ames Research Center, helped sightseers better understand the Stratospheric Observatory for Infrared Astronomy or SOFIA, a Boeing 747SP jet that is equipped with an infrared telescope. Credit: NASA/Kathy Barnstorff

Image above: Larry Cooper from NASA's Langley Research Center in Hampton, Va., unpacks a Mars airplane model for display at EAA AirVenture 2007. Credit: NASA/Kathy Barnstorff