In the Amur Region, the crews of Russian Tu-95MS strategic missile-carrying bombers practiced in-flight refueling of aircraft. More than 5 Tu-95MS aircraft were involved in the flights; refueling was carried out from Il-78 aircraft. The Tu-95 aircraft was initially created with an in-flight refueling system, which in theory made it possible to increase the flight range to 18 thousand km with one refueling and up to 32 thousand km with several. The Tu-95 fuel system includes 11 tanks, which are located in the wings and fuselage. The weight of fuel to be filled can reach 88.5–100 tons, this is up to 50% of the take-off weight of the aircraft; aviation kerosene grades T-1, TS-1 or T-2 are used. Now the Tu-95MS-16 version aircraft are being upgraded to the Tu-95MSM version with the engines replaced by the NK-12MVM modification with AB-60T propellers. This version is distinguished by a complete replacement of radio-electronic equipment, while the airframe of the aircraft remains the same. The crews of Tu-95MS aircraft practiced piloting techniques and air navigation during the day and at night. In-flight refueling was carried out at an altitude of over 5,500 meters and at speeds over 550 kilometers per hour.