Reading about the midair in your #28 post Orac, brings to mind an event that very nearly had an identical result.
Night PI's again, NF11's, I am target with lights out.
The idiot behind me was an ex trapper, and his nav had a radar failure at about 2-3000ft in my 6.
When the nav told his pilot to call it off he said he thought he could see me (he lied) and would continue.
I am sitting there waiting for the Murder call, when out of the corner of my eye I saw a green light which suddenly rushed towards me.
This big black shape passed just over my canopy and the light turned to red.
My deputy flight commander had been creeping up my slipstream hoping to sight me !