4 Images

Moment of Horror

A flash of light from a second explosion erupts from a rail car, at right, at Atocha railway station, Madrid, on March 11, as commuters flee earlier blast. (AP)
Security camera captures the progression of one of the blasts at Atocha railway station in Madrid on March 11. (AP)
Spanish commuters flee the spreading smoke during later stages of a terrorist attack in Madrid earlier this year. (AP)
Smoke from the March 11 terrorist blast envelops Spanish commuters on the platform of the Atocha rail station in this photo taken from security cameras. (AP)