
This undated image taken from the Uniformed Services University of the Health Sciences Fall 2007 newsletter shows Nidal Malik Hasan. Maj. Hasan an Army psychiatrist set to be shipped overseas opened fire Thursday Nov. 5, 2009 at the Fort Hood Army post, authorities said, a rampage that killed 12 people and left 31 wounded in the worst mass shooting ever at a military base in the United States.(AP Photo/ Uniformed Services University of the Health Sciences )
CNN has obtained surveillance video (below) from a 7-Eleven store shows a man who, according to the store owner, is Maj. Nidal Malik Hasan at the cashier's counter hours before the shootings in Fort Hood, Texas.
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