"A lot of us work very hard for this country, to make America a better place," said Muqtedar Khan, a progressive Muslim scholar who has just given Congressional testimony on U.S. foreign policy in Afghanistan before Thursday's attack. "And this one nut like Maj. Hasan comes along and in one crazy episode of a few seconds he undermines these years and years of hard work we are doing to make American Muslims part of the mainstream in the community."

Hasan, an Army psychiatrist, is a Muslim who attended his former mosque daily and had an "Allah is Love" bumper sticker on his car. Soldiers reported Friday that the shooter shouted "Allahu Akbar!" — Arabic for "God is great!" — during the rampage.