A PM paramilitary police helicopter overflies the Favela da Mare shantytown complex, a drug-trafficking stronghold and considered one of the most dangerous places in the city, at down in Rio de Janeiro, Brazil, on March 30, 2014. More than 1,000 police backed by the military and armored vehicles occupied the vast Mare favela near Rio's international airport at dawn Sunday, just 74 days before the World Cup. AFP PHOTO/VANDERLEI ALMEIDA