You would think that due to the hundreds of years of terrorism/unconventional warfare by the ETA and the subsequent counter measures employed and lessons learned by the Spanish, they would be better prepared for such attacks. Of course the ETA almost invariably calls ahead and informs the authorities when they're going to blow something up (unless they are doing an assassination) so that the area can be cleared before they detonate the explosive. (At least according to the sources I used for my counter/anti-terrorism class last year, if anyone has more information on terrorism in Spain, I'd like to hear it.)