MOORE, Okla. (AP) — Spotlights bore down on massive piles of shredded cinder block, insulation and metal as crews worked through the night early Tuesday lifting bricks and parts of collapsed walls where a monstrous tornado barreled through the Oklahoma City suburbs, demolishing an elementary school and reducing homes to piles of splintered wood. At least 51 people were killed, including at least 20 children, and those numbers were expected to climb, officials said.