WOW! That's tremendous!
A graduate of Middlebury College with a degree in physics, Mr. Easton has been the recipient of numerous awards and honors for his technical achievements. Most notably, in 2006 President Bush awarded Mr. Easton the prestigious National Medal of Technology at a White House ceremony for his work with spacecraft tracking and GPS.
And congratulations as well!
I'm sure that you're aware of this site, but others here might not be. I found it interesting because it continuously tracks how many orbits Vanguard 1 has made as well as how many miles it's traveled since launch.
An article I wrote on the invention of GPS is here (I’m just to the right of my dad in the photo):
http://www.thespacereview.com/article/626/1