Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja) 

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)

Members of the special police of Bosnia and Herzegovina (BiH) attend the exercise "Sadejstvo 2015" with the scenario of an armed rebellion in prison in Banja Luka, Bosnia and Herzegovina, Oct. 8, 2015. (Xinhua/Borislav Zdrinja)