Dennis Pelc pitches in to help volunteers spruce up the playground at Kilbourne Park Friday, Sept. 11, 2009 in Chicago. Volunteers across America joined together in the National Day of Service on the eighth anniversary of the terrorist attacks on the U.S.
(AP Photo/M. Spencer Green)
Environmental Protection Agency Administrator Lisa Jackson, right, pitches in to help Kris Smart, left, and other volunteers spread mulch and spruce up Kilbourne Park's community gardens, Friday, Sept. 11, 2009 in Chicago.Volunteers across America joined together in the National Day of Service on the eighth anniversary of the terrorist attacks on the U.S.
(AP Photo/M. Spencer Green)
Andree Kessel of Arlington Heights, Ill. pitches in to help volunteers spread mulch and spruce up Kilbourne Park's community gardens, Friday, Sept. 11, 2009 in Chicago. Volunteers across America joined together in the National Day of Service on the eighth anniversary of the terrorist attacks on the U.S.
(AP Photo/M. Spencer Green)
Roberta Laughlin pitches in to help volunteers spread mulch and spruce up Kilbourne Park's community gardens, Friday, Sept. 11, 2009 in Chicago. Volunteers across America joined together in the National Day of Service on the eighth anniversary of the terrorist attacks on the U.S.
(AP Photo/M. Spencer Green)
COMMERCIAL PHOTO - In this photograph taken by AP Images for UnitedHealthCare Walter Hershman gives CPR instruction to Christine Deska, an AARP employee, on September 11, 2009 in New York City as part of a citywide initiative to train 50,000 people in the life-saving skill in the coming year. The class, a National Day of Service event, was a collaboration between AARP, the American Heart Association, NYC Service and UnitedHealthcare.
(Photo by Jonathan Fickies/UnitedHealthcare via AP)
COMMERCIAL PHOTO - In this photograph taken by AP Images for UnitedHealthCare Kimberly McKeon, left, a UnitedHealthcare employee, and Mollie Dunlap, center, an AARP volunteer, take CPR training on September 11, 2009 in New York City as part of a citywide initiative to train 50,000 people in the life-saving skill in the coming year. The class, a National Day of Service event, was a collaboration between AARP, the American Heart Association, NYC Service and UnitedHealthcare.
(Photo by Jonathan Fickies/UnitedHealthcare via AP)
President Barack Obama and first lady Michelle Obama paint with volunteers as they visit a Habitat for Humanity project site in Washington, Friday, Sept. 11,2009, highlighting community service on the eighth anniversary of the Sept. 11 attacks.
(AP Photo/Charles Dharapak)
U.S. President Barack Obama (2nd L) and first lady Michelle Obama (3rd R) paint a room with volunteers during their visit to a Habitat for Humanity project in North East Washington, September 11, 2009.
REUTERS/Jason Reed (UNITED STATES POLITICS)
In this photo provided by Regan Communications actress Cameron Diaz smiles while working with volunteers to assemble an elevated flower bed at the Young Achievers Pilot School, in the Mattapan neighborhood of Boston, Friday, Sept. 11, 2009. Diaz worked for two hours Friday with members of the Boston Celtics, students, and volunteers on the project that marked the first national day of service on the anniversary of the Sept. 11, 2001 terrorist attacks. (AP Photo/Regan Communications, Sean Flanagan)