"We are doing our best to ensure that Engels fire crews, who have just put out the flames after the previous attack, are not left without work in the face of the increasingly difficult economic situation in Russia," it said.A source in Ukraine's Security Service (SBU) later on Jan. 14 told the Kyiv Independent the attack had also struck ammunition warehouses at the airbase storing cruise missiles and glide bombs. The SBU source added it was part of a wider operation overnight that targeted several sites across Russia, including the Aleksinsky Chemical Plant in Tula Oblast, the Saratov oil refinery, and the Bryansk chemical plant.Earlier on Jan. 14, Russian local authorities reported an overnight drone attack had damaged an industrial facility in the city of Engels, located in Russia's Saratov Oblast, following a previous attack overnight on Jan.