Michael Zehaf-Bibeau, a recent convert to Islam, was identified by Canadian officials to U.S. counterparts as the gunman in Ottawa, multiple U.S. officials told CNN.
Obama expresses cautious optimism. An infected nurse shows signs of improvement. And a military response team begins training.
What would spur someone to walk up to a war memorial, shoot a soldier guarding it, then rush into Canada's Parliament?
The "Somebody's Gotta Do It" host responds to viewers who said he "came across as bored and disdainful" after last week's show on endangered animals.
It was a surprise, even for a journalist, to be driving down Wellington Street, the city's ceremonial thoroughfare, and to find myself swept into the chaotic aftermath of a disaster. I was rushing to a television studio at mid-morning and passing by the National War Memorial, just minutes after the shooting. A solider was down.