Last week saw what was seemingly the first 'close encounter' between a US warship (USS Ross) and a Russian Su-24 fighter jet in the Black Sea [2] (after America's "provocative and aggressive" behavior). The fly-by was 'caught on tape' aboard USS Ross and as Alert5 notes was released by The Navy [3]this week who said both the ship and warplane were both in international waters and airspace at that time.
