At the Vietnam Veterans Memorial on Wednesday, (from left) Defense Secretary Leon E. Panetta, Jill Biden, Interior Secretary Kenneth L. Salazar and Sen. Jack Reed applaud during a groundbreaking ceremony for an education center that will tell the stories of generations of veterans killed in combat. (Associated Press)

At the Vietnam Veterans Memorial on Wednesday, (from left) Defense Secretary Leon E. Panetta, Jill Biden, Interior Secretary Kenneth L. Salazar and Sen. Jack Reed applaud during a groundbreaking ceremony for an education center that will tell the stories of generations of veterans killed in combat. (Associated Press)