Hell Night   Friends and strangers alike comforted those who were injured by the blast. photograph by AFP/DPA     Law-enforcement officials combed adjacent Techwood Drive for evidence. photograph by Lynn Johnson Next Photo SI Olympic Dailies Day: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18