 Trapped refugees began piling up bodies as barricades and tried to dig into the ground to hide . Some managed to escape that first night , while U.S. troops turned searchlights on the tunnels and continued firing , said Chung Koo @-@ ho , whose mother died shielding him and his sister . By the second day , the gunfire was reduced to potshots and occasional fusillades when a trapped refugee moved or tried to escape . Some also recall planes returning that second day to fire rockets or drop bombs . Racked with thirst , survivors resorted to drinking blood @-@ filled water from a small stream running under the bridge . 
