You know it, I know it, but the public has been conned into thinking airport security does anything at all, in terms of making flying any safer.
What happens at other shared airports in NZL ?
Is it Blenheim where air force & civil share runway ?
Even if KRA had to have their own separate "terminal", it wouldn't need to be very big for a few 34 seater flights a day.
Apparently, you don't have to go through any security if flying on a turbo prop in NZL, just like you don't in OZ if aircraft MTOW is under 20 tonnes & no other aircraft over 20 tonnes operating from that airport.
eg. most Rex regional ports in OZ, with DBO being the exception, although Rex were trying to fight that, because Dubbo council has to have security for QF Q400's.