the war began. while in poland, president biden met with ukrainian refugees at the national stadium carrying a ukrainian girl, at one point, in his arms and offering comfort to those who've been displaced. despite the millions who have already fled ukraine, there are countless others still trying to escape. one norwegian volunteer paramedic is bravely making daily trips to ukraine to help as many -- help as many people as he can flee to poland. cnn's ed lavandera has his story. >> reporter: at any given moment across ukraine, there are countless people on the streets doing whatever they can to help in the war effort. so, when missile strikes happen near a populated area, like we saw on saturday in lviv, that sends shivers down the spines of all those people trying to help. the air-raid sirens no longer startle diederich. >> the sirens are telling us it's no danger anymore.