US Army Specialist Ryn Hill (R) and his daughter Emma, 3, place flowers and a candle on November 7, 2009 for victims of the 05 November shooting at Fort Hood, at the main gate to Fort Hood, Texas. US Army Major Nidal Malik Hasan, 39, a psychiatrist and specialist in combat stress, unleashed a massacre at the US Army base, killing 13. Getty Images logo Getty Images 2 weeks ago

US Army Specialist Ryn Hill (R) and his daughter Emma, 3, place flowers and a candle on November 7, 2009 for victims of the 05 November shooting at Fort Hood, at the main gate to Fort Hood, Texas. US Army Major Nidal Malik Hasan, 39, a psychiatrist and specialist in combat stress, unleashed a massacre at the US Army base, killing 13.