Civil Guard officers embrace each other as they attend the vigil for two fellow officers who were killed in an attack in Palma de Mallorca , July 31, 2009. A bomb placed under a police car killed two officers on the Spanish holiday island of Mallorca on Thursday, in what authorities called the second major attack by the Basque separatist rebel group ETA in two days. REUTERS/Dani Cardona (SPAIN CRIME LAW CONFLICT POLITICS)