J430,
Suggest that if you rocked up in a C182, which was registered to a foreign government, carrying your ID as the duly qualified commander and had declared some sort of emergency as the reason for the divert, then you'd have no trouble, s'long as you kept to certain limited, relevant areas of the airfield and then got going again once the reason for the emergency/divert had been sorted. They'll prolly overlook your bail-out pistol but your rat-pack can-opener and nail clippers might get you into all sorts...
I read somewhere that the seppos pretty much budget to have one or two a/c go over the side, per cruise, per carrier (ie. roll-offs and other non-combat losses). Means that there must be a bunch of Tomcats & Hornets scattered around the ocean floor...
And if that $37m mentioned as the cost in the SMH story is the replacement value of a Hornet, that sounds pretty cheap to me... Surely these days, the one in the drink would be a Super Hornet, costing rather more than $37m?!