[doorgunner69]

When I lived in SD in the mid-80's and traveled north, the checkpoint sometimes would provide great theater.

It appeared other illegals or "helpers" would go ahead, and radio back if the CP was operating or down. Sometimes it appeared to go hot unexpectedly to the approaching illegals.

You would see cars suddenly pulling off the road and passengers leaping out into the brush of Camp Pendleton.

There was a lot just north of the CP buildings usually full of various vehicles, I guessed were confiscated from nabbed druggies or illegals.

[Fhios]

You just reminded me, there were other checkpoints to. There was the agriculture check point going into and out of California/Arizona border. We got stopped we were asked if we were carrying any farm produce then sent on our way.