Jock:
Agreed, a person with ill-intent may be able to gain easy access to the airside area but his ability to board the RPT aircraft or present a threat to the passengers if fairly remote. Do you really think you could walk from across the airfield or along the apron in front of the hangars and just tag along with the rest of the boarding pax?
Jock, as far as I can tell, there is absolutely nothing to stop them doing exactly that at YBHI and elsewhere, assuming they are armed.
And for the purposes of this discussion I am not talking of mentally disturbed persons, but an attempt by an organised group which at present means Islamic radicals.
To put it another way, has anyone ever checked your ASIC?