The shuttle of flights run out of McCarran Airport, Las Vegas by private contractors for various departments of the US Government are known as the Janets. Previously operated using Boeing 737-200s, the flights have now been upgraded to 737-600s, probably as a result of the low price of these jets given their lack of popularity with airlines. They operate a pretty busy schedule at certain times of day. The flights file a plan to a location and then cancel it en route as they divert to whatever secret installation that is their true destination. Paul, Chris and I decided to try and find a good location to catch one as it departs since they make a tight turn out and should have good light in the evening. Several arrived while we were there and we were too late for one of the departures but we did catch one of them heading out. The light ended up being very favorable.