Some, though, want to expand the idea of military involvement. Peter Garretson, a senior fellow at the American Foreign Policy Council and former director of Air University's Space Horizons Research Task Force, would like to see the military lead planetary defense efforts, particularly mitigation. “NASA is principally a science and exploration agency. In my view, this is clearly a defense mission,” Garretson says. “You're not deflecting the asteroid for science.”
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