of threats from the west. the question is is he right, where is the heavy ra leverag. cnn is live at the air bas where the warning shot was fired. please explain what happened and what the reaction has been on the ground. reporter: yes. that was earlier today at a base north of sevastopol. a group of ukrainian soldiers approached the men in green, the russians, to try to talk to them. however, the russian soldiers and this is footage that we obtained from a local crimean station. the russian soldiers, some of them fired in the air. fortunately, fired only in the air.