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NASA has set May 15 as the launch date for the first shuttle mission since the Columbia accident two years ago, the agency's associate administrator for space operations said on Friday.
NASA is making strong progress in changing its safety culture after the breakdown that led to the Columbia tragedy, but many workers are still afraid to speak their minds, according to survey results released Friday.
- Having a loud voice; vociferous; clamorous.
- Of grand or imposing sound.