Sci-fi drama on NBC

• They save the day
• Valiant types
• They may be unsung
• Purple Heart recipients, e.g.
• "Hogan's ___," TV series
• Sci-fi show that costarred Hayden Panettiere and Zachary Quinto
• Day savers
• Stirring at last: 'Shake your chains to earth' like champions!

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