A Civil Guard mans a roadblock after a second bomb was discovered near the area where a bomb exploded earlier in Palmanova, in the Balearic Island of Mallorca, in what authorities called the second major attack by the Basque separatist group ETA in two days July 30, 2009.Two civil guards were killed by the bomb near a Civil Guard barracks on the Spanish island of Mallorca, officials said on Thursday, a day after a similar attack on a civil guard barracks in Burgos, northern Spain. REUTERS/Dani Cardona (SPAIN CRIME LAW CONFLICT POLITICS)