I've found one game called (I think) Virtual Warrior, that is based on the Army training sims. I'm checking them out ot see if they have the acquire/shoot things that I'm looking for in a game. I know the VW has a cheesy 'fake' southern accent from the DI. Gods that's going to be annoying as hell if I have ot listen to that for long periods of time.
What's a good length of time to do these exercises to start with? What should I be working up toward?