putting them on high alert. checking on the ongoing biden administration response, again with mike tobin who is on the ground in western ukraine. what is the latest tonight, mike >> one of the things we are keeping an eye on is a battle that's been taking place in a town south of the country. it appears that the key objective in the town of kherson is a bridge over the river that connects the mainland to the crimea insula. also control of this town would mean access to the water and access ultimately to the black sea. that is why you see so much activity of russians trying to take a footprint in places along the waterway so they can control that that have access to their supply. that is where the story came from. he is the marine engineer from the ukrainian army who