Andrew Olvera, an urban search and rescue member with the U.S. Agency for International Development's Disaster Assistance Response Team, said shortly before the boy was freed. Twisted ropes of steel reinforcing rods were all that stopped huge concrete slabs from falling onto the scene. Two concrete floors hung down in front of the building like curtains. The whole operation is dangerous, but it's risk versus gain. To save a human life, we'll risk almost anything.