+ 1 "not using real guns for ANY FOF training, no matter how many times they are checked to make sure they are empty."
Duty guns and training guns should not be mixed for those types of things.
Training at the line with your duty gun and live ammo is different.
But doing other training exercises should be done with dummy guns or inert firearms.
+1 on restricing live ammo completely from those locations and making sure that there is no live ammo brought into the area.
The live firing on the range should be done in a separate location from the training that involves training with blanks.