Jolie aimed to visit what she termed "forgotten emergencies," crises that media attention had shifted away from. She became noted for traveling to war zones, such as Sudan's Darfur region during the Darfur conflict, the Syrian-Iraqi border during the Second Gulf War, where she met privately with U.S. troops and other multi-national forces, and the Afghan capital Kabul during the war in Afghanistan, where three aid workers were murdered in the midst of her first visit. To aid her travels, she began taking flying lessons in 2004 with the aim of ferrying aid workers and food supplies around the world; she now holds a private pilot license with instrument rating and owns a Cirrus SR22 and Cessna 208 Caravan single-engine aircraft.