Two Russian Bear long-range bombers were escorted by two USAF F-15 Eagles out of an air exclusion zone off the coast of Alaska, U.S. military officials yesterday. U.S. radar picked up the Russian turbo-prop Tupolev-95 planes about 500 miles off the Alaska coast. The U.S. fighters from Elmendorf Air Force Base were dispatched to meet the bombers and escorted them out of the region without incident, the officials said.

The United States maintains the air exclusion zone off the coast of Alaska, barring unidentified aircraft or aircraft that don’t file flight plans inside that area.

The last case of Russian aircraft approaching the U.S. coastline or ships in the Pacific was in February. Then, four Bear bombers flew near the aircraft carrier USS Nimitz, with one of them flying about 2,000 feet from the Nimitz’s deck. Russia’s Defense Ministry said at the time there was no violation of flight regulations during the incident. A ministry official described the flights as standard operating procedure for air force training.

Meanwhile, U.S. military officials stated the incidents are not a concern. They say it’s the Russian military flexing its ability and presence.