Family, friends and U.S. and foreign dignitaries pay homage to President Ronald Reagan at a memorial service at the National Cathedral in Washington, D.C. The 40th president will be buried Friday night at the Reagan presidential library in California. Former President George H.W. Bush spoke emotionally of his predecessor's warmth and humanity. President George W. Bush, who has used Reagan as a political model, lauded his economic and defense policies. Hear NPR's Robert Siegel.