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01:28
4 U.S. Marines, gunman dead in Chattanooga shooting
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Hamilton County Sheriff
chattanooga shooter personal issues tuchman pkg ac _00022728.jpg
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02:14
Marines 'willingly ran back into the fight'
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chattanooga shooting investigation update serfaty dnt lead_00000624.jpg
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01:55
Chattanooga shooter followed writings of al Qaeda cleric
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From Facebook
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01:16
Sources: Shooter searched 'martyrdom' online
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obama addresses white house flag at half mast wolf _00000124.jpg
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01:00
White House, U.S. Capitol flags lowered to half-staff