If you haven't watched this video in a while, you should. You will notice that throughout the movie, you can see the ODST badging on structures and soldiers. Kind of cool if this is an insight into ODST operations.
This is the 7 minute Neil Blomkamp short, btw.
http://www.youtube.com/watch?v=tOvvKegdhRE
"Man is born free but is everywhere in chains" - Rousseau