José Miguel Valderrama was an economist. He lived with his family in Coslada, though he and his girlfriend had just bought a flat in Alcalá de Henares. He travelled to his work at the offices of Caja Madrid by suburban train to Atocha station. On the train he used to meet a fellow student, Laura, who got on a few stops earlier and would keep a seat for him. However, on the morning of 11 March, Laura missed her usual train, saving her life.
11 March 2004 fell on a Thursday. Early that morning, a number of terrorists with links to Al-Qaeda planted thirteen bombs on four suburban trains covering routes running through Madrid. Ten of the bombs exploded between 7.37 and 7.39 am, when the trains were at Atocha, El Pozo and Santa Eugenia stations and alongside Calle Téllez. 191 people were killed in the attack and around 1,500 were wounded. It was the deadliest terrorist attack in Spanish history. On 3 April 2004, agents from the Special Operations Group (GEO) were about to enter an apartment in Leganés where the perpetrators of the attacks were believed to be hiding when the terrorists detonated twenty kilograms of explosives in an act of collective suicide. The ensuing blast killed one of the officers, bringing the total number of people killed by the 11 March bombers to 192.