back home. i'm nervous. i'm worried about my parents and my friend who has parents in mariupol whom she hasn't heard from for 20 days. she shows us video of a performance before the war shattered their lives. the choir has gone silent. the light at the end of this tunnel is receding. >> trans "at first people thought it would last a week" says her husband. they say hang on, don't lose hope. but now we prepare for the worst. and so the painful exodus to the west goes on. this train bound for hungary, this farewell perhaps final. ben wedeman, cnn, lviv. >> if you would like to help people in ukraine who may be in need of basic necessities like food, water, or shelter, go to cnn.com/impact. there are many organizations on