Security doesn't just have to be about preventing terrorism or a reaction to
terrorism. Plenty of airplanes have very expensive and very easy to remove
avionics and parts.



I find it strange that so many people will defend the right for people to
walk around an airport un hindered taking pictures or just looking around..

Yet I would guess that if the same person were walking around the marina or
the RV storage yard or your house taking pictures or writing down your
license plates, boat registration numbers you just might consider it
suspicious and challenge the person yourself. ( a picture is the same as
writing it down, it can be reviewed later)



And let's not forget that it is only the aircraft tail number that anyone
can go to the internet and lookup the owners name and address on the
internet..



I have a feeling that the people who complain the most about the fences or
the locks on the doors are the ones who don't own an aircraft that they want
protected from any kind of harm..