orca - So you've never pushed the weather limits then? Honestly? I suppose it depends on your definition of "thick mist", but I think most LL operators have pushed the envelope at times, especially those in an aircraft designed to operate IMC at LL. Some mental fag-packet maths reckons that even with a "legal" 5km of vis, two aircraft closing at 420kt would have only 12 seconds to see and avoid. I agree that lookout is vitally important, especially for combat aviators, but I don't see why there is such resentment in some quarters to a system designed to save the lives of our friends and colleagues.