On June 8, 1972, South Vietnamese planes, in coordination with the American military, dropped a napalm bomb on Trang Bang, which had been attacked and occupied by North Vietnamese forces. Phúc joined a group of civilians and South Vietnamese soldiers who were fleeing from the Cao Dai Temple to the safety of South Vietnamese–held positions. A South Vietnamese Air Force pilot mistook the group for enemy soldiers and diverted to attack. The bombing killed two of Phúc's cousins and two other villagers. Associated Press photographer Nick Út earned a Pulitzer Prize for his photograph of the aftermath. It also was chosen as the World Press Photo of the Year for 1972. The image of Phúc running naked amid the chaos became one of the most haunting images of the Vietnam War. In an interview many years later, she recalled she was yelling, "Nóng quá, nóng quá" ("too hot, too hot") in the picture.