Post-attack, top reporter worries his cover blown

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This Thursday, May 9, 2013 photo, shows issues of Semana magazine featuring investigative reports written by journalist Ricardo Calderon, in Bogota, Colombia. Calderon's most recent investigative series for Semana magazine exposed the scandalously luxurious life of military officers jailed for crimes including murder and genocide at Tolemaida army base. (AP Photo/Ricardo Mazalan)BOGOTA, Colombia (AP) — His exclusives have triggered some of Colombia's biggest scandals, leading to the dismissals, arrests and prosecutions of dozens of crooked, sometimes murderous public officials.