I said fog because there have been some pretty incredible infiltration incidents that have happened regarding fog.
There was one incident which happened while I was in but I'm not at liberty to say but I will say that fog played a huge role.
Remember that I always think of things in a coastal setting.
Ah, but I have also spendt quite some time thinking of things in a coastal setting my friend.
On a few occations we had those fogy nights with absolutely no wind, only the waves washing on the rocks and beaches on the fortress, then we could hear doors slamming and cars moving all the way from the mainland.
There was even one time we actually had to call off the guards on patrol.
The first sign was obvious when one of the patrols came back in and reported that they had lost their way between two checkpoints up on the top and nearly walked off the cliff.
The response was to instruct the next patrols to ignore the checkpoints and stick on the paved roads.
Then some hours later we heard a faint message on the radio (AN-PRC's constantly hampered with weak batteries) when one of the patrols called for back up...
They had taken position in a fox-hole or dug-in MG-stand on the northern part of the island, preparing to fire at unidentified persons not responding to their calls.
A vehicle was sendt out to check the situation, and they brought the sentries back with them.
They both swore that they had heard a boat landing on the shore and people trying to get through the barbed-wire fences there.
As there was no response on their demands for ID and they didn't get contact with us on the radio, they took cover in the fox-hole some 30 meters from the shore where they loaded live rounds and prepared themselves to fight whatever it was off.
A quick inspection of the sandy shore and the fence relvealed no evidence of human activity or attempts to breach the fences, consequently the patrols were called off for the rest of the night.
Daylight came, and shone no light on what could have happened during the night, there were no traces of activity on the beach.
My experience is thereby that fog can play tricks on peoples minds, and that sounds do travel a far distance under such conditions.