The "IRON BEARS" mercenaries in Aliens: Colonial Marines.

As most of you heard that mercenaries will appear in the upcoming game in February 2013. But the question is who are theses mercenaries, are they wetland PMC's shown in the Prometheus ship...or could it the infamous Iron Bears, whose background are Baltic, Slavic, and Russian. The Iron Bears have been employed by the Weyland industry/corp to deal and capture xenomorphs. These guys are ruthless S.O.B's that comment serious crimes like kidnapping, assassination, espionage, and others. what a perfect combination to deal with the aliens and other opponents. These guys of course have a military background, but mainly those who went to a military prison. So will the Colonial Marines have a problem with these guys along with weyland-yutani commandos? Or will they just get along with the Marines in fending off the despicable xenos. As some of you know who are the Iron Bears which they appeared in an Alien game which I forgot the name.