President and First Lady Observe Moment of Silence

President Barack Obama and First Lady Michelle Obama observed a moment of silence Monday on the South Lawn of the White House.

The moment of silence was for "prayer or reflection" the President said when he called for the pause to honor the victims of the shooting in Tucson, Ariz.

More than 200 White House staffers joined the President and the First Lady.

At exactly 11 a.m., three chimes rang out, then the Obamas bowed their heads and closed their eyes. A White House flag flying nearby was at half-staff, as ordered by the President.

After almost exactly one minute, they turned around and headed back into the White House, arms around each other.