Braving frigid temperatures, an exuberant crowd of hundreds of thousands packed the National Mall on Tuesday to celebrate the inauguration of Barack Hussein Obama as America's first black president. He grasps the reins of power in a high-noon ceremony amid grave economic worries and high expectations.

It was the first change of administrations since the terror attacks of Sept. 11, 2001. Crowds filled the National Mall from the Lincoln Memorial to the U.S. Capitol for a glimpse of the proceedings and, in the words of many, simply "to be here." Washington's subway system was jammed and two downtown stations were closed when a woman was struck by a subway train.