Americans travel to Ukraine to help Ukrainians defend against Russia

CBS Mornings" co-host Tony Dokoupil meets several Americans traveling into Ukraine to help Ukrainian forces fight and evacuate those still in harm's way.Each weekday morning, "CBS Mornings” co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and 8 a.m. ET on CBSN.