WASHINGTON ( CNN ) -- Two U.S. Air Force F-15s escorted two Russian Bear long-range bombers out of an air exclusion zone off the coast of Alaska , U.S. military officials said Wednesday . Two U.S. Air Force F-15s were dispatched to meet the Russian bombers . 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 area without incident , the officials said . The United States maintains the air exclusion zone off the coast of Alaska , barring unidentified aircraft or aircraft that do n'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 say the incidents are not a concern . They say it 's the Russian military flexing its ability and presence . E-mail to a friend .
Alaska radar picks up the Russians planes about 2,000 feet off the U.S. coast . The Russian entered an air exclusion zone . They are escorted out of the area without incident . Russian planes last came near the U.S. coastline in February .