Eight NATO Navies Take Part in Exercise Breeze 2015 Varna, on the Black Sea, July 3 (BTA) – Over 30 warships and auxiliary vessels manned by 1,700 naval personnel from eight NATO member countries are taking part in the Bulgarian-hosted Exercise Breeze 2015, the exercise commander, captain Kosta Andreev, said on Friday. The drill is being conducted in Bulgaria‘s territorial sea, contiguous zone and exclusive economic zone in the Black Sea between July 3 and 12.