Quote Originally Posted by SPJ View Post
If these are just contrails, why would the planes be flying at such high altitudes and creating grid patterns?

I would not be surprised at all if something more than meets the eye is going on with this. After all since when does the government give the public straight, honest answers?
Personally i would start researching airline flight paths. I have a feeling it will help explain why there is a "grid like" pattern involved for flights.

http://www.barnabu.co.uk/google-eart...th-animations/