More background on Gabrielle Giffords' would-be assassin: Jared Lee Loughner was rejected from the US Army in 2008 because he failed a drug test, says a military official. The official, who spoke on the condition of anonymity, said he wasn't sure what drug Loughner tested positive for. The Army has confirmed publicly that Loughner tried to join in December 2008, but never was allowed to serve. Click for more on Loughner and his creepy backyard shrine.
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