We require a two-week course that combines use of force law with force-on-force scenario management - referred to as non-lethal training ammunition (NLTA). The program is taught by FLETC and is one of their better offerings.
We are required to follow our agencies guidelines whenever training is run and the standards mirror the ones from FLETC. This means that you have to have two instructors who have been through this special class to conduct training.
I'm not trying to be flippant about safety but the overhead of running scenarios (instructors, NLTA weapons, protective gear) quickly becomes pretty onerous and it prevents us from training in the medium as often as we should. It is not uncommon for our folks to go YEARS between force-on-force scenario training.
Prior to the formal FLETC course, we sent people to the Simunitions instructor course. I still think that course is worthwhile as they had a lot of neat tips and tricks that you develop from frequent use of the equipment.
The nice thing about using Simuntions in lieu of blanks is that chambering a live round is not possible if you use the provided inserts.