Yes. In the states it is most often referred to as Instinctive / Reactive shooting. Places like Rogers Shooting School focus on it A LOT.

If the alleyway is truly dark, after the first shot it won't matter anyway since everyone has lost their night vision.

Thanks Jody, simple question good but simple answer guess OldSoldier missed his meds and got his knickers in a bind.
As far as loss of night vision have never lost mine on the double tap. I close my eyes

I recently trained a few hours with a buddy of mine in a gun course called Combat Focus Shooting. It was good stuff and I plan on becoming a CFS instructor myself.

It focuses on instinctive shooting which entails a deep isosceles stance with both arms locked out and using no sights at close ranges. Rob Pincus designed CFS course and wrote a book on it called Combat Focus Shooting.

Excellent book on the subject of instinctive shooting. It also covers how the body will react in stressful situations such as confronting a man with a gun.