Given that I've been in Iraq throughout the depicted period I can say this is what I think went wrong:

1.US Military Convoys are dispatched in 3 HUMVEES AT ALL TIMES. 2.Military Bases are absolutely ALCOHOL FREE ZONE. Any violators will be prosecuted if not discharged. 3.No Unauthorized civilians or Kids are allowed near the Camps. And badges are to be worn at all times within. 4.In the case of the Sniper incident, the standard course of action would be having aerial support within a short period of time. 5. It is not at all easy to leave the base at will. Any violators could also face prosecution and even discharged. Other than that; it was a decent job with simulating the outer environment, and all in all it's worth the time. The slang used was close enough too