I just stumbled across an old Airliners.Net discussion that's closed and archived, hence this brand new posting on a previously dealt with topic. (Just wanted to emphasize that I DO use my search engine!!)
The topic was the Janet flights from LAS to Area 51: http://airliners.net/discussions/general_aviation/read.main/294652/.
I've found this topic intriguing ever since I saw a documentary about it about 3 months ago. If anyone's interested, I've found these nifty links: