"Line of Fire" is the second of two episodes that delve into some of the major emergencies of the past 70 years.

We begin with one of the most challenging humanitarian crises that UNHCR has faced: the devastating Bosnian wars of the 1990s, with a particular focus on the airlift that saved countless lives during the infamous siege of Sarajevo. We also invite three people who are working in the midst of an ongoing conflict, Yemen, to document a day in their lives as they strive to help some of the millions of people trapped by war, disease, poverty and hunger.