Something's going on in Vegas.
Merkel's plane (Germany's AF1) flew to Germany last night and is now on approach to Vegas again. There is a German transport plane flying from Vegas to Germany and 2 German transport planes are also arriving at the East Coast, they are probably refueling there and flying on to Vegas.
In addition 2 RAF Airbus A332 have just taken off from Vegas.
Vegas is approached by foreign airplanes since days, they seem to load or unload something and flee back to their countries.
Very conspicuous.