U.S. 's AP says there was no violation of flight regulations . four bomber twice flew about 2,000 feet over the USS Nimitz deck , Russia military says . U.S. Defense officials say four F/A-18A fighter jets from the Nimitz were in the air . Tupolev-95 Bear bombers took off from Ukrainka Air Base , in Russia 's Far East , in the middle of the night , Japanese officials told The Associated Press , adding that one of the planes violated Japanese airspace . Japanese officials tell AP one of the planes violated their country 's airspace .
U.S. 's AP says there was no violation of flight regulations . four bomber twice flew about 2,000 feet over the USS Nimitz deck , Russia military says . U.S. Defense officials say four F/A-18A fighter jets from the Nimitz were in the air . Japanese officials tell AP one of the planes violated their country 's airspace .