"I'm beginning to wonder if it was Gasax or one of his fellow 'why not' brigade who caused me and my crew some lost heartbeats in a similar situation a few years ago in an equally well known military low flying choke point. Coming around the corner at about 75ft AGL to see a light fxed wing head on and very slightly above - I had to descend aggressively to avoid a collision. No evasive action whatsoever from the other aircraft. I presume he never saw us (but I guess he felt our wake a few seconds later)."
What action would a light single have time to take? If he was 500' from any person etc, he was legal as a civil pilot. The military have areas totally reserved to them - eg the Highland Restricted Area from 1500 to 2300 local, Monday to Thursday. If flying in Class G airspace, they should be prepared to see and avoid. At the speed I fly, I'm like a hedgehog on the motorway to them.