Two Russian aircraft made separate close approaches to the USS Enterprise , officials say . The activity was ` ` abnormal '' but not necessarily hostile , officials say . A pair of Russian aircraft buzzed a U.S. warship off the Arctic coast of Russia on consecutive days last week , leading the U.S. Navy chief of naval operations to raise the issue with his Russian counterpart , a Pentagon spokesman Col. Dave Lapan said . The reports were confirmed after Russian military officials visited the Pentagon .
Two Russian aircraft made separate close approaches to the USS Enterprise , officials say . The activity was ` ` abnormal '' but not necessarily hostile , officials say . The reports were confirmed after Russian military officials visited the Pentagon .