sarajevo military helicopter land evacuate people wound police raid terrorists take hostages sarajevo airport part first joint drill eu peacekeeping force eufor bosnia local army police exercise part drill dub quick response 2017 sarajevo hit severe flood eufor fly help population also protest across country risk terrorist group link organize crime ring smuggle arm fake document realistic exercise opportunity demonstrate capacities power determination quickly efficiently respond security threat say bosnia security minister dragan mektic 20 years since end war 1990s bosnia still trouble ethnic politick external influence separatist aspirations bosnian serb croat nationalists grow strong also threat radicalization among traditionally moderate bosnian muslims five-day drill 600- strong eufor along 400 british nato troop also include reconnaissance surveillance wide areas across bosnia 2015 part bosnia hit great flood century leave thousands without home hurt economy year two soldier police officer kill separate terrorist attack eufor deploy bosnia late 2004 replace nato sfor force maintain security 1992-95 war mandate repeatedly extend bosnia central authorities want join nato bosnian serbs prefer strong tie russia oppose threaten hold referendum issue eu force help bosnian agencies fight terrorists nato-backed drill