Michael Williams, a spokesman for the United Nations peacekeeping force, said that the village of Vedro Polje west of Bihać had fallen to a Croatian Serb unit in late November 1994. Williams added that heavy tank and artillery fire against the town of Velika Kladuša in the north of the Bihać enclave was coming from the Croatian Serbs. Moreover, Western military analysts said that among the impressive array of Bosnian-Serb surface-to-air missile systems that surrounded the Bihać pocket on Croatian territory, there was a modernized SAM-2 system whose degree of sophistication suggested that it was probably brought there recently from Belgrade.[20]