I read that with interest Dave but it all seems just a tad unbelievable to someone whose launched a few of these things. The navigator says they were unguided ? Having witnessed several off the launcher the missile had to be captured by the gunner who basically flew it onto the target. If it wasn't 'captured' either in the sight or out - the damn thing danced wherever it wanted totally uncontrolled until the wire broke and then it was supposed to go right and down. I think what I am trying to say is that you probable wouldn't hit the mountain let alone a cave entrance without controlling it.
Fire and forget wasn't even........ fire and a cat in hell's chance.