Crews of generation 4++ multifunctional fighter-bombers Sukhoi Su-34 from an aviation division of the Central Military District, in the Chelyabinsk Region, carried out a night-time flight into the lower stratosphere and destroyed a hypothetical enemy at a supersonic speed, the district's press service said.

"During the training flights Sukhoi Su-34 crews carried out climbs to altitudes of about 15 kilometers, into the lower stratosphere. Upon achieving supersonic speeds they practiced interception and elimination of a hypothetical enemy. The crews operated totally on their own, without contacting air defense stations on the ground, which made the task more complex," the news release reads.

In October last year, an air regiment of the Central Military District completed a program for rearmament to obtain the newest generation 4++ planes. The last three jets were redeployed to the Chelyabinsk Region in the last move that completed the formation of a second squadron of Sukhoi Su-34.