Mark Lardas from League City, Texas, USA demonstrates the stages of ariane 1 for a group of middle school students in 2009.
Mark works in the aero-space industri on the space shuttle programme. Every year the company sponsors an annual "Engineer-for-a-Day" program for middle school students.
Mark is giftet modeller and have written books about the shuttle. http://www.ospreypublishing.com/authors/mark_lardas/