Russian Pacific Fleet antisubmarine aircraft exercises in the Sea of Japan and Sea of Okhotsk June 17, local time, the Russian Ministry of Defense released news that antisubmarine aircraft belonging to the Russian Pacific Fleet conducted search and sinking exercises for hypothetical enemy submarines in the waters of the Sea of Japan and the Sea of Okhotsk, as well as air-to-air refueling. According to reports, the plane took off from the military airport in the Kamchatka border region. During the exercise, radar and hydroacoustic equipment were used to analyze the on-site search data and sent to the fleet warships conducting exercises in the nearby sea area. In addition, some of the flight routes are accompanied by MIG-31 fighters.