Lifechangers: Maria Shriver's March on Alzheimer's

In 2003, after learning that her father, Sargent Shriver, 94, was diagnosed with Alzheimer's, California's First Lady Maria Shriver began leading the crusade to find a cure for the disease.

Kicking off the Long Beach, Calif. Women's Conference on Sunday, Shriver led participants in a March on Alzheimer's event, raising funds for the Alzheimer's Association.

"Extra" special correspondent Katherine Schwarzenegger was there to catch all the action and to support her mother's cause.