Purpose Films has a rather good documentary on the private military industry, Shadow Company, coming out soon. There will be screenings at the South by SouthWest Festival in Austin. I highly recommend it. (I saw a draft version.) You can see a trailer via their website. Also, do read Matt Armstrong's favorable review HERE.
2:00 PM, Sunday March 12th - Austin Convention Center
11:15 AM, Tuesday March 14th - Austin Convention Center
7:15 PM, Saturday March 18th - Alamo S. Lamar 1