
Obama, Biden pay tribute to 9/11 victims
September 11, 2012 4:21 PM
On the 11th anniversary of the September 11th attacks, the president and the first lady placed a wreath at the Pentagon memorial, while Vice President Biden attended a memorial at the crash site of Flight 93 in Shanksville, Pa. Scott Pelley reports.
America remembers Sept. 11 attacks 11 years later







