FILE - Ukrainian paramedic Serhiy Chornobryvets, center, with his colleagues treat a man wounded by shelling in a hospital in Mariupol, Ukraine, March 1, 2022. Chornobryvets, who won praise for his bravery in the siege of Mariupol, now works to save soldiers on the front lines of Ukraine's war with Russia. (AP Photo/Evgeniy Maloletka, File)