WASHINTGON-Two Russian aircraft flew within roughly 100 feet of a U.S. ship in the Arctic's Barents Sea last week, an unusual move that has caused some concern among officials in the Pentagon.According to Pentagon Spokesman Col. Dave Lapan, the USS Taylor had just left from a routine port visit in the town of Murmansk when it was buzzed by a Russian maritime patrol aircraft on September 10th, and then buzzed again one day later by a Russian helicopter...