President Obama is scheduled to speak at the memorial service for Saturday's shooting victims at 6:00pm Mountain Time. You can watch live in the video feed below and we'll be tracking developments throughout the service.
The memorial service will be held at the University of Arizona's McKale Center, which filled to capacity about an hour before it was scheduled to begin. The overflow crowd was directed to the university's stadium, where the memorial service is being simulcast.
According to the New York Times, President Obama is expected speak for about 16 to 18 minutes at the end of the service. His remarks will focus on remembering the victims of the tragedy, and will speak to how we can all best remember them in our own lives. Earlier in the day, he and the First Lady visited with Rep. Giffords and other victims of Saturday's shooting at the University Medical Center in Tucson.
Update: Jake Tapper tweets that there were big rounds of applause for the doctors, Sheriff Dupnik, and the hero intern Daniel Hernandez.
Update: According to the pool report, President Obama spent about 45 minutes at the hospital where he met with Giffords and four other victims of the attack. He arrived at the McKale Center around 5PM local time where he met with familes of the deceased. With the President were Senators McCain and Kyl along with Rep.Sen. Barrasso and Attorney General Holder.
Update: In the comments, Al Rodgers assembles some photos from the ground. At least 14,000 are in attendance.
Update: President Obama has just arrived at the memorial service at one minute past the hour local time. He arrived with the First Lady.
Update: Immediately to the President's right is Daniel Hernandez, the hero intern. Mrs. Obama is to his left.
Update: Dr. Carlos Gonzales delivers the Native American blessing to start the service. Sitting to the First Lady's left is Mark Kelly, Rep. Giffords' husband.
Update: Dennis Tamblyn, a student at the University of Arizona, delivers a stirring rendition of the national anthem. And for those of you keeping score at home, President Obama did sing along.
Update: CNN's Kathleen Parker decided to mock Dr. Gonzales' blessing. Way to be classy, Kate. Instead of mocking Dr. Gonzales, how about you join in offering your best wishes for his son serving in Afghanistan?
Update: A standing ovation for Daniel Hernandez, who is joined by ASUU. of A. student body president Emily Fritze.
Update: And a warm reception for Governor Jan Brewer who follows Fritze and Hernandez.
Update: Former Governor and current DHS Secretary Napolitano follows Brewer, reading from the Old Testament.
Update: Attorney General Holder delivers remarks. He'll be followed by President Obama. There will be a new post for his remarks.