Sgt. Quornelius Radford's father said he hadn't noticed anything unusual but his son was seeking a transfer and complained of racism at Fort Stewart.

It was easy for those people to make fun of him for the way he spoke. After that, he really didn’t speak much.”

The soldier accused of opening fire Wednesday at his Army base in Georgia, wounding five people, had endured relentless bullying over his stutter almost as soon as he joined the military, former co-workers said.