In US-Russia aerial encounters, 'the greatest risk is miscalculation'

Over the Black Sea (CNN)Thirty thousand feet in the air, a United States Navy crewman jumps to his feet and rushes toward a large window in the reconnaissance jet. He points. There, off the left wing, a twin-engine, blue-and-white fighter jet is briefly visible before diving out of view. The Russian Air Force has just buzzed the plane, a warning that the US military should tread carefully here on the edge of the Crimea. It's a heavily militarized area, and even though US military reconnaissance missions like this are a regular occurrence in international airspace over the Black Sea, tensions between Russia and the US, as well as its allies in the region, have been flaring up. The P-8A...