 Ukraine's armed forces destroy heavy MLRS and two Mr.S.Howitzers. Ukraine's defenders destroyed a Russian TOS-1, S.Sepyok, heavy multiple launch rocket system and two 2S-19, MSTAS, self-propelled Howitzers, said Oleksandr Tarnovsky, commander of the Tavriya Operational Strategic Group. The commander also said that the rocket forces and artillery units from the Tavriya Operational Strategic Group completed 1,322 combat missions over the course of the day. Unguided 220mm thermobaric rockets TBS-3, TBS-3M, TBS-4 and TBS-4M of Solent-Sepyok are very dangerous for infantry, even in well-fortified positions. The principle of such shells is that a small chard of an ordinary explosive explodes and instantly spreads a cloud of combustible gas around. The MSTAS saw action during a number of military conflicts. The Howitzer is fitted with a semi-automatic loader and fume extractor. The gun can be loaded at any angle. Maximum rate of fire is 7 to 8 shells per minute. The MSTAS is compatible with all standard 152mm shells used by the D-20 Toad Gun Howitzer and 2S-3 Arkazia self-propelled Howitzer. Operational and combat use revealed that the MSTAS was not particularly accurate comparing with contemporary western artillery systems. Shells normally land within 150 meters from the designated target, so a number of shells might be required to hit the target.