I agree Avman, especially when a new face turns up near a regular group of enthusiats, the first thing thats noticed is that they are new, & if they are really up to speed with the latest in whats going on, as its in their nature usually to to find out whats new on a strangers patch, as regards aircraft etc etc.
Where I work all the regular enthusiasts are known to the Police & have been briefed & no doubt checked out by them, also they have been told what to look out for & the steps to take, if suspicious of anyone or anything.
from what I have been told the last meeting held was well attended by the enthusiasts (Spotters).
