This is interesting. I would think after 50 years of the U-2 flying around this wouldn't be happening. I wonder if they fly at 61,000 ft the ATC computers would just overlook them because they are above class A airspace...
http://www.nbcnews.com/news/investi...affic-control-computers-shuts-down-lax-n95886
http://www.nbcnews.com/news/investi...affic-control-computers-shuts-down-lax-n95886