Russia’s TOS-1 Heavy Flamethrower Lobs Brutal Thermobaric Rockets At Close Range Yesterday’s war news brought with it unconfirmed reports that Russia has deployed TOS-1 Heavy Flamethrower launchers to Ukraine. Mounted atop T-72 tanks, the launchers can unleash rockets with lung-searing thermobaric warheads from two miles away to just a quarter-mile down the street.