Since the shootings at Fort Hood, authorities have focused not only on the accused gunman, Maj. Nidal Malik Hasan, but also on Anwar Al-Awlaki, a Muslim cleric Hasan knew. Margaret Warner reports.
Army Maj. Nidal M. Hasan has been charged with premeditated murder in last week's shooting at Fort Hood. Jeffrey Brown talks to a reporter for an update.
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