From the New York Times:
At least one gunman killed 12 people and wounded 31 in a shooting on Thursday afternoon at Fort Hood in Texas. Military police killed one shooter, who had two guns, and at least two soldiers are in custody.
Lt. Gen. Robert W. Cone, the commanding officer at Fort Hood, the largest active military installation in the country, said the base was in lockdown as military authorities, with the help of the Federal Bureau of Investigation investigate the rampage.
"This was a terrible tragedy," said General Cone, speaking at a news conference Thursday afternoon. "Stunning."'
An Army spokesman, Gary Tallman, said that the dead gunman was an Army major. A law enforcement official identified the him as Malik Nadal Hassan.