In regards to the LE training for your everyday patrol officer I have found the Firearms Training Systems to be the best training tool. Commonly known as FATS it is a live video screen which places you in life like situations; i.e. school shooting, armed subjects, and domestic disputes. 

A third party controls the reaction of the subject on screen and you actually fire your own simulated service weapon. There is also a machine that pans your movements and fires rubber bullets at you while responding to the situations. By far the best training I have ever had. Also gives you a video walk through of where your shots landed and which ones would be fatal hits.

Fred.

F.A.T.S. is a nice piece of equipment but only utilized at the academy and about once a year after that.  We have a "Combat Town" and shoot simunitions.  Video is nice but nothing gets your adrenaline running like the sting of the sims.

FTO's years ago were at times only on the road two years out from the academy but now I think you have to be out on the street for at least five years or so......how long a boot?  I still am........ 8)