In Britain, four men have each been sentenced to 40 years in prison for a failed suicide bombing of London’s subways two years ago. The attempt came two weeks after the July 7 attacks that killed 52 people. They failed because the bombs didn’t explode. On Wednesday, eyewitness Arthur Burton-Garbett described the aftermath.

Arthur Burton-Garbett: “I saw him standing there when the bomb had gone off. I realized the detonator hadn’t exploded the bomb. My first reaction was: 'How lucky can you get?' The second reaction was: ’He’s tried to murder me and everyone on that train.’ And I thought: 'God, I'm going to do something about this and go after this man.’ So I did.”