Originally Posted by
newyorkgeorge
At MIA you will see unmarked white 737s near AA gates (being serviced by AA). I've been told they are a/c for transporting prisoners and deportations back to Central America.
Another airport that sees unmarked 737s on a regular basis is LAS. These B737-600 aircraft use the call sign "Janet" and operate passenger shuttle service on weekdays for personnel working at the federal government's Tonopah Test Range and Area 51. The "Janet" flights are operated from a secure, private terminal at LAS.