When the bus is stopped by the Chetniks, the gun of the leader
alternates between being a type of Kalashnikov and a French FAMAS.
The song which plays as Michael and Risto enter the apartment to search for the mother, is "M.O.R." by Blur. This song was released in 1997, despite the movie taking place during the siege of Sarajevo, years earlier.
When the bus was stopped over an hour into the movies by Chetniks, where was the U.N. guards to protect them? A scene later the U.N. guards are with them again.