Recently on vacay in Las Vegas, I did some hanging out at the Maverick Helicopter Tours terminal which sits on McCarran Airport property. I walked in and noticed they had an airport observation area that you could sit with front row seats to the tarmac...perfect! While sitting there watching the heli tours and airline arrivals and departures, I noticed this "private" 737-300 taxi by. I initially thought, "someone must be living the good life, traveling around in their own 73" I watched it depart and that was it. Anyway I got curious later on and Googled the N-number off of it to see who she belonged to. After doing a little homework, I found out this wasn't just any private 733, it belonged to the US Govt., operating for the Air Force. I found a Wiki article on this and it turns out its a private government airline that makes multiple trips from McCarran to Tanopah Test Range which appears to be Area 51! They operate under the callsign "Janet". According to Wiki, "Due to the secretive nature of the airline, little is known about its organization." Funny enough, as "secret" as it's supposed to be, they are able to be tracked on flightaware. I thought this was pretty interesting and wanted to share this with you all. Has anyone else heard of this, or know what kind of operations they do?