On 8 Sep 2005 18:00:36 -0700, "Robert M. Gary"
wrote in .com::

Maybe because aircraft below 18,000 almost never get to talk to center
or approach?

You're referring to flight operations conducted in Mexico I presume.
That hasn't been my experience.

Additionally, I wonder what the stationary bands of blinking lights at
regular intervals between Californian & Hawaii and in the eastern
Atlantic represent. Would those be ATC intersections?