Silso,
Fair point my bad england. I was referring to night flying in general not the unrecce'd sites being regularly practiced. Consider my bad typing hands slapped.
But on the unknown sites bit, it depends where you are and which service you are in whether they are recce'd by day first. The Navy/Marines are a bit more up for it than the RAF and Army to go in blind. Plus sometimes you can't recce everything within the last 7 days and it isn't exactly realistic training to go to a recce'd site all the time.
Which is all well and good on a plain somewhere. But in the middle of a city center, solo pilot NVG or mortal that would be pretty taxing. I don't know if the rest of the crew help out on this in a HEMs aircraft.
That's why I just wondered how often the guys would practice it..