CNN PRODUCER NOTE     potomacfg183, of Potomac Falls, Virginia, shot the first part of this video from his back porch, then raced to Dulles Airport, where he shot the rest from an overpass about a mile from the airport. 'I was a child in middle school when I learned about the future space shuttle program while visiting the Air and Space Museum in Washington, D.C. I remember watching the first flight and the many launches since then, the Challenger and Columbia disasters, and now the retirement of the program,' he says. 'I had a lump in my throat as I watched the shuttle fly over my head for the last time...I feel like a piece of my childhood has ended.' He says he was texting his kids while they watched outside their respective schools. 'I look forward to taking them to see the shuttle Discovery at the Udvar-Hazy museum in the near future,' he says. 'We should continue to fund the space program and explore the outer reaches of our planet. The technology that NASA has developed has helped us tremendously on earth.'
- ssesha, CNN iReport producer