I was referring to the US-Mexico border. I pulled out an old chart to
refresh my memory. The note I was thinking about says, "report to FAA radio
prior to entering ADIZ." The chart uses a pretty wide stripe to indicate
the ADIZ. Some airports are even within the ADIZ line. So, if I am going
to be flying along the border looking at the fence, is it a good idea to
contact FAA radio? And, what is FAA radio?

Carl