Questions linger after Osama bin Laden raid

Rep. Buck McKeon (R-Calif.), who chairs the House Armed Services Committee, said Thursday the helicopter damaged when it hit the compound's wall was heavily loaded and lost lift because of a change in air temperature. "It was not a mechanical failure," he said. One reason for the skittishness about discussing the helicopters is now becoming clear: They were stealthy choppers not known to be used in the field.