Factual error: At the scene in the church, there are lots of security personnel standing around wearing steel helmets. The helmet type seems to be an East German M56 helmet (standard for the East German Armed forces until reunification). There is no reason why a Russian security force would have the M56 helmet. (Only if the makers of the movie where able to purchase a lot cheaply :).)
BangOlafson
22nd Jun 2009